She keeps getting into fights with the guards in the holds. First Riften, now Falkreath.

I just got a 7000 gold bounty in the latter when the guards jumped on me because of her.

huh well thats a good question... i dunno.

...maybe shes having her periods? after what shes been through and having that id want to kill people too id assume

Wow, what an uncouth answer, Litter. Geesh.

Nayr, I have Serana as my follower in both my Xbox and PS3 games. Sometimes she'll start fighting with another follower. On the Xbox, she and Barbas would not stop fighting and they wouldn't follow me through the current dungeon so I had to reload. On my PS3 she fought with Shadowmere. Since Barbas, Shadowmere and Serana are immortal, the fights never stop. However, I was able to mount Shadowmere and ride away from crazy lady who showed up at the next fast travel like nothing was amiss.

She was also once stuck in a fighting stance when there were no enemies left and therefore would not follow me. I Fus Ro Dah'd her, hacked her with my ebony sword until she almost died and then she snapped out of it and things were fine again. Try attacking her?

i know, right? i simply couldnt help myself with this one

Considering her age, I'd think menopause would have come and gone a few thousand years ago. Meaning no periods.

shes an undead near-childhood girl... do undead women even get menopauses if they wont even age?

edit: oh holy cr**.. i just realized im starting to sound like that Bob From Accounting dude sorry bout that

In my game, she's stuck in one of the towers in the Soul Cairn. I had saved at least twice (I hope not three times) before I realized she hadn't and wouldn't catch up to me. Once I found her, she'll run up to me and comment, trade stuff, etc. normally, but only on a small patch of floor; if I try to lead her off of it, she teleports back to her starting point near the center of the area. I only worked this out last night, so I haven't looked to see if my third save is prior to this glitch(I only keep three saves per character). I don't have the option to order her to go anywhere, so I can't try to manually move her out of the tower. Any advice/suggestions?

Fus Ro Dah

Well, that again depends on if they are undead or unalive

Seeing as eating food provdies them benefits and they can drown underwater, i'm going to say they're unalive