Gill is an experienced Stage 6 teacher and has been teaching Mathematics for over 10 years. She has been Mathematics Coordinator at LaSalle Catholic College and Assistant Head of Department at Waverley College. As well as mentoring and providing professional development to other Stage 6 Mathematics teachers, she has also run Talented Student HSC workshops for the Catholic Education Office, assisting in preparing students for HSC examinations.

Gill holds a Bachelor of Science (Advanced) degree, with honours, and a double major in Mathematics and Chemistry. She has also completed a Graduate Diploma in Education and a Masters of Education (Educational Psychology). She is acredited by NESA as a Proficient Teacher and has been a member of the Mathematical Association of NSW and the Metropolitan East Mathematics Head Teachers Association. Gill is passionate about mathematics and about education and loves assisting students in making connections across different areas of mathematics.