For the first few years of her life, Amy grew up like any other little girl. Her parents coddled her, and she spent her days playing and having fun. Her father worked a lot, being high up in his company, but that left her and her mother wanting for nothing.
When Amy was five, her father was transferred to a branch of his company in Australia and, naturally, his family went with him. She settled in there rather easily, being enrolled at a Muggle Primary school, as her parents were Muggles, and hadn't quite figured out what the odd going-ons were.
Thankfully, her primary school was connected to a pre-school, and she befriended a little boy there. He was a Half-blood, so his parents knew. When she went over to play, she had a bout of accidental magic, and they realized that she was a Muggleborn. The parents sat her own parents down to talk, and explain things. They also told them about Bilby school, and how to get her enrolled.
Her parents were uncertain, not wanting to take her away from her school. But finally it was decided to enroll her in Bilby school.
She flourished there, enjoying the school and befriending the teachers and students. Life went well, and her parents knew they'd done the right thing.
Unfortunately, things didn't stay great.
When she was at school, a fire was started in the house. Her parents didn't get out in time, and burned to death. She was withdrawn from school while her guardianship was resolved, becoming a Ward of the State.
Now she has returned to Bilby school, trying to get back to normal.