If they are frozen fuzzies, cutting them and THEN thawing is not that messy, I've done it and it wasn't gruesome and the snakes (all well acclimated to f/t) were fine with the meals. Corn snakes can eat quite a big prey item so if a fuzzy isn't bigger around than 1 1/2 times her largest diameter, she can manage the whole thing. I'd look at her next to the smallest fuzzy you have; I bet it's fine.