Try skipping the next scheduled feeding. Let her go about 2 weeks without eating. Try to find a rat that weighs about 50 grams. Most pet shops have little transport boxes for live rodents, place this box/w the rat on top of the enclosure, or next to the vent holes, depending on your set-up.This is called pre-scenting. After about 30 minutes place the rat in the enclosure on the opposite end from the snake. Good Luck...