My wife, Mjoll the Lioness, walks in place and tries to walk through walls and objects. If I take her with me somewhere she won't fight, she just stands still and takes damage, even if I order her to attack.
It started when I fast travelled to my house at Lakeview Manor. A bandit said they have my wife, which started a quest to free her. Instead of going to free her right away, I went into my house, and about 30 seconds later she materialized out of nowhere. The quest was marked as completed, and she's been messed up since then.
I loaded a save from before this happened, she was still messed up even though when I saved that game she was fine.
I have a character from my old Skyrim game with 360 hours of play time, and have never had a problem. Since I cleared the game's cache and started a new playthrough it's been freezing up, people have disappeared without being killed and now my wife is messed up.
How do I fix this?
I'm playing Skyrim - Legendary Edition on the Xbox 360.