mice are too small for a snake that size. people always underestimate balls and size of food. i feed babies out of the egg small adult mice. at that size she should be on weanling rats or at the least 2 mice.
she doesnt seem skinny just small for her age. quite small imho. i have 2011 babies that are already that weight. you can tell she is older because she has some length to her. id say step up the size of the food after a few smaller feedings to make sure her digestive system is working properly. one she is eating and doing well i would try and switch her to rats.
id also just like to say she is a very pretty ball. id consider her a dinker. almost chocolate like. very nice blushing nice donuts and not alot of alien heads. do you have a picture of her belly?
is it solid white?
beutiful snake and i hope she gets all that she was missing now.
adam jeffery