Isabelle is transgender, and describes herself as "cursed with some physical characteristics" that mean her body doesn't match her identity as a girl. Her childhood has not been an easy journey.

"I have tried to hurt myself, and questioned whether I want to be here in my darkest times," she said.

Once she is old enough, Isabelle wants to take cross-sex hormones, also known as stage two treatment, which will allow her to go through puberty and develop as a girl. But her life is laced with fear and worry, as she knows in order to access this treatment, she has to go to court and get approval.

"I don't just want to access stage two treatment," she said. "I need to."

On Monday, Isabelle and many other transgender children came to Parliament House in Canberra with one message for MPs: please make it easier for us to get the treatment we need.