Ok update time.
It really did seem to be an over-medicated thing. They made adjustments. She still isn't truly lucid but Dad said things are ok and sent me home. I helped a lot today there. I'm going to go back more often and help but I'm really in hell to stay overnight there. I know, it's wrong to feel in hell in my parents' home, my former home, but I do, and it's worse at night. I slept less than three hours and had flashbacks all night.
I intend to try going to my primary care doctor in the morning. I know I'm not well, and a friend was over tonight and the whole time I thought, "please leave." Finally, I politely said that I needed me time and asked her to leave. Now I'm alone, and it feels pretty good.