In addition to what Tyree said.

She was feeding on adult live rats
Keep in mind that adult rats are big and this could have led her to fast to catch up.

I personally feed nothing larger than small rats (about 65 grams) even to my biggest girls and this allow me to have BP that eat with consistency.

When I drop a live rat inside my feeding box
Keep in mind that handling your BP prior to feeding can cause stress which can lead to refusal.

How often do you handle her.

what do I do?
Get a scale and monitor her weight.

Double check your husbandry and make sure your temps & humidity are what they should be.

Feed smaller preys.