And this weather isn't helping! I said the same thing with Kali and my horse. It would be nice if it was decent outside that you can at least take Pepper for a walk. Just in case that would help! Sometimes it does. Just a little walk to get things moving or just to tired her out or take away the anxiety. I would have done that with Kali too. Just let her be outside for a while. But it's just too damn cold and too much snow and this morning it's windy again!
I hope you finally get some answers and that she finally will be comfortable! When she finally lays down you should lay down with her.