What a rough way to enter the ball python world.

I understand about the wanting an exchange but your little one won't like it.

If you really feel your daughter won't understand if you take her snake back, talking to the breeder about a really good discount on another animal might be an option.

Otherwise consider it a learning experience, most of us have made at least one blunder early on in our career.

Best of luck no matter your decision.

Gale