I am suspecting she may have a mild case of depression. This may explain both her sleeping a lot and the EA.
If she has depression a crowded party is giong to leave her a bit tense... the important part is she went of her own volition without any pressure from you.. THAT is the goal.
Be VERY careful with the "what's wrong" that is blatant pursuit and temperature taking.
You need to learn to rely on what she's saying, again use the wild animal analogy, you can't ask a wild animal what's wrong, you need to OBSERVE and make an educated guess... each time you poke at her it just irritates her ..
