that should help you figure out three intervels
The two accidentals are B flat and A flat
Answer: I’m not too good at making up backstories, but what if she was born in the garden of an orphanage/old ladies house, and her parents left her with enough money so the person taking care of her wouldn’t have to worry about expenses? And then, since bunnies mature faster than normal humans, she ended up being super smart despite her youth, and decided to take the money and run away, choosing to fend for herself instead.
Explanation: I hope this helps, you said help with the beginning of the backstory so I did my best. Hope it’s adequate! It’s late here and I can’t think much lol