I have a photo that aptly describes what your saying and shows how funny the snakes can be when they aren't hungry...This rat did not get eaten that night by this snake


The actions you describe are pretty common for a snake that isn't interested in eating, I'd let her go a full week and then offer her a small mouse and once she starts back eating again continue to feed small/medium mice and if you can adjust your feeding schedule to every 5 days and see if she continues to eat better for you.