I can be various things moving to a new enclosure being one of them.

If it is a young animal I would recommend switching back to something identical in size if there is a difference now if it is an adult it's a whole other story.

Here are some reason why BP refuse a meal or go on fast

Shed, stress, being sexually mature, cooler temperature, change in environment etc

If it's an adult monitor her make sure she is well hydrated and wait it out, if it's a younger animal do what you can to help her resume feeding.

And remember skipping a meal does not can't as a fast they will do that on occasion.

If it persist YOU need to play the investigator and see if anything can be done to help your animal resume feeding.