i have a 15" and a 30"ish i've been feeding them both small pinkies... i know that this is far too small for the big one... but i think that they're about right for the baby... the mom has to eat about 10 pinkies in order to even look like she's eaten... the baby has to eat about 3... what size mice should i get her? and how many should i feed her? how often should i feed them both? the mom is about 7ish and the baby is 2