Sounds like she has no problems eating She should be fine after 4 smaller mice. You can probably move up to small rats, as long as you think its ok. I don't know how big your snake is =P

I would actually give her 3 days to digest. Although the mice aren't as big as the other mice you were feeding her. 4 small mice sounds almost equivalent to a small rat altogether.

Hooray to hungry snakes!