Meet The Team

Who We Are. What We Do.

Better Self Psychology is a provides psychological services to children, adolescents, and adults. We aim to make therapy accessible and rewarding to engage with.

Our practice is built around a community of individuals and families, with the intent to provide clients with the skills, connection, and experiences that may otherwise be missing their lives.

Our team is comprised of highly skilled psychologists who provide consistent positive outcomes in a warm and caring environment.

Clear action requires clear thought. Our psychologists are here to discuss your challenges and help find a way forward.

Tamika Christoforou

Tamika Christoforou

Clinical Team Leader & Clinical Psychologist
B Psych (Sc), P GradDip (Psych), M Psych (Clin)

Tamika loves to see our little ones!

She maintains a family-focused approach to therapy and is a firm believer in working alongside parents to meet their children’s needs. When helping young children, Tamika uses a play-based therapy style to engage at a meaningful level.

Tamika is experienced working with NDIS and psychometric assessments and practices Family-Centred Feedback-Informed Therapy (FC-FIT) amongst other therapies.

Tamika is just as experienced working with adults and goes above and beyond to support her clients between appointments as well as during.

Rebecca Sharkey

Rebecca Sharkey

Clinical Psychologist
B Psych (Hons), M Psych (Clin)

Rebecca joins us from the schooling system and has a passion for working with teenagers and young adults.

Rebecca can communicate in Auslan and is interested in working people from the Deaf community. She enjoys working with anxiety disorders, autism, body image, and gender and identity issues. Rebecca also provides  psychoeducational assessments.

Rebecca draws upon a wide range of evidence-base treatments and delivers them in a warm and creative way that quickly places people at ease.

Lauren Frensham

Lauren Frensham

Clinical Psychologist
B Psych (Hons), MPsych (Clin), PhD

Lauren’s supportive manner will help you feel comfortable from the start. She enjoys working with children, adolescents and adults to address a range of concerns, including depression, anxiety, self-esteem issues, school difficulties, stress management and behaviour management.

Lauren provides clients and their families with the skills to move towards positive change and optimum well-being.


Mikayla Southern

Provisional Psychologist
B Psych (Hons)

Mikayla is passionate about working with adolescents and supporting them through the challenges experienced at this difficult developmental time. Mikayla believes that success looks different for everyone and provides individualised support in a caring environment. She has a holistic approach to well-being and utilises mindfulness practices when appropriate.

Mikayla’s practices are evidence-based and she is always looking to expand her knowledge on topics relating to her clients’ needs. Mikayla has experience working with a variety of challenges including anxiety, depression, self-esteem, and friendship issues, and supporting children to develop their social and self-regulation skills.

Mikayla also offers psycho-educational assessments to children and young people

Guillermo García Castillo

Guillermo García Castillo

Psychologist
B Psych (Hons), M Psych (Clin)

Also known as William, Guillermo is a Cognitive Behaviour Therapy-trained psychologist from Spain. Guillermo enjoys working with teenagers, younger adults and their families, as well as with clients from diverse backgrounds to reach a common ground in understanding and create a sense of supportive connection.

Guillermo will assist you in understanding yourself and your struggles as he focuses his sessions on self-reflection and self-connection. With Guillermo, you will own your achievements, mistakes and learnings, as he will guide you through a deeper and better understanding of what took you there and how to get to where you want to be

Caitlin Gray

Caitlin Gray

Psychologist
B Psych (Hons)

Caitlin joins us from the education system, where she has supported a diverse range of young people in school and their families. She is experienced in providing psychoeducational assessments and interested in supporting young people to work through a range of issues, including anxiety, depression, self-esteem, communication skills, relationship issues and stress management.

Caitlin is committed to using a range of evidence-based therapy approaches within a calm and relaxed environment. She believes this combination is important for young people to feel comfortable and supported. Caitlin is empathic, caring and down-to-earth. She encourages fun and light-heartedness.

Trephina Gartley

Trephina Gartley

Psychologist
B Psych (Hons), M Psych (Clin)

Trephina has a background working with children and adolescents for the past five years and enjoys supporting young people and their families to navigate life’s challenges and better understand themselves. She has experience working with a range of difficulties, including depression, anxiety, anger, self-esteem and poor sleep.

Trephina works in a warm and collaborative manner, empowering her clients to have a say and an active role in therapy. Trephina is playful, creative and curious and enjoys thinking of innovative ways to work with children, young people and their families to provide them with the best support (and have lots of fun along the way).

Vanessa Schiller

Provisional Psychologist
B Psych (Hons)

Vanessa offers psycho-educational assessments to children and young people who may need some support with their learning. She provides parents and educators with essential insights into a child’s unique learning profile and recommendations for how to best support their ongoing learning and development.

Vanessa has experience providing psycho-educational assessments in schools and supporting children with autism to achieve their goals. She is passionate about creating a comfortable and fun environment while helping young people understand themselves better through the assessment process. 

Kate Veremeenko

Kate Veremeenko (on leave)

Clinical Psychologist
B Psych (Hons), M Psych (Clin)

Kate brings a wealth of experience from having worked across public, private, and NGO sectors. She offers a warm approach, using honesty, humour, and empathy in each of her sessions.

Kate enjoys working with adults, particularly in the areas of relationship challenges, adjusting to motherhood and parenting, resilience building, and women’s wellbeing. As her client, you will develop a deeper understanding of yourself and what you bring to your relationships, learn new ways to manage difficult thoughts and emotions, and be supported to step out of your comfort zone to build confidence and healthy skill sets.  

Melinda Pfueller

Clinical Psychologist
B Arts (Hons Psychology) M Psych (Clinical)

Melinda loves to work with teenagers and young adults, and provides a non-judgmental approach to working with people from all walks of life.

She has worked previously as a school psychologist and spent many years in private clinical practice, finding creative ways to support young people and their families. Prior to this, Melinda worked for CAMHS and has a wealth of experience in supporting people with trauma histories and complex needs.

Melinda uses principles of mindfulness and yoga to create a space of calm, relaxed care and will work with clients at their own pace to help them move through the challenges life has thrown their way.

Miyu Ito

Dietitian
M Nutr & Diet

Miyu offers nutrition consults to help overcome food challenges.

She applies a holistic assessment to the needs of each person and provides individualised support. Miyu enjoys collaborating with families and is passionate about supporting people with disordered eating patterns, emotional eating, and weight and body image concerns. Miyu has a particular interest in feeding and eating difficulties in children.

Through her treatment plans, Miyu develops goals and strategies that suit each person’s lifestyle, provides the skills to achieve goals, and offers a safe and non-judgemental environment.

Tristan Duggan In Psychology Consulting Room

Tristan Duggan

Practice Director & Clinical Psychologist
B Psych (Hons), M Psych (Clin)

Tristan splits his time between working with families and supporting the Better Self team.

Tristan is interested in helping teenagers and has taken on a mentoring role for individuals without a healthy male role model. He sees the quality of the relationship with his clients as crucial for achieving a great outcome. Tristan also advocates for the positive benefits that physical activity plays in our health and well-being. 

Tristan is not taking on new clients at present but has an active role in training and supervising the team to provide the best possible care for families.

Better Self Psychology Reception Staff

Our Reception Team

Receive a warm welcome and help with your questions.

Ebonea and Ellen make up our reception team and are your first point of contact when visiting us. They will organise your information, book appointments, and help you feel comfortable the moment you enter the door.

Ellen is our Practice Manager and can assist with any enquires from referring practices. 

Take a Virtual Tour of Better Self Psychology.