Humidity is a possibility as was stated above, but sometimes especially if they've been remaining burrowed for long periods of time, they will choose to soak for extended periods sort of a way of cleaning out their system.
Refusing food can also be related to lower than normal humidity. If you are using lights as a heat source they will burn off ambient air humidity. It has to be countered with more frequent misting.
As for getting upset about you trying to feed her, well that is her telling you to leave her alone. She is likely a bit annoyed with all the attention she's been getting. You can just let her be and adjust her humidity though this time of year they do tend to slow down and not eat as much because they can still sense the changes outside even though their tank climate is maintained.
Raise the humidity and keep it up for a few days then offer her a more enticing food item like an appropriately sized frozen thawed feeder mouse and see if that interests her.
Best of luck.