Ok, so here's an odd issue. After the battle with the bandits inside the chapel, I went collecting gear and when I went to group inventory, Shadowheart's inventory was blank, and her weight ratio was also blank. I popped out her inventory screen (upper left hand button on her inventory screen) and everything showed up. Went back to group and it was blank again. Grid showed, but nothing there. I also couldn't give anything to her. Long rest came back, and still nothing.

I think what may have caused it is when I was in battle, I had Astarion sneaking, and accidentally rolled over Shadowheart, which showed her inventory to pick-pocket. I canceled out of it though. That's the only thing I can think of that would cause something like that. Weeelll... I guess I'll be restarting. No biggy.