Oh and I've done this as well to get a non-eater to eat. ... Stop offering food. Ignore her for a few days(5-7). Then offer a nice wet dish of Worms. Maybe even try Pinkie mouse chunks(cut it up when frozen)

With my first wild baby Radix I left him alone after a week of pestering him to eat worms n fish(which he didn't touch) Then I offered something completely different. Mouse pieces. Wouldn't you know it, He ate.
New smell, New intrigue.

It can be a challenge and a very frustrating challange at that, to try n get a wild snake to eat, let alone a baby wild caught.
Give it time, He'll eat.
Lol It'll be a great tool to teach patience with, Maybe mark on a calendar with your little girl how many days are 'no playing with snake' days n then feed day!