I thought I would just kill him after the conversation was over and his power would be broken, because, you know, he's dead. So I slapped him up side his head with my trusty 2hd hammer and he went night night. Oh, killed everyone else to. Sebille stayed out of the fight so she never died.
When all was said and done I went to talk to her and her eyes were "black". She was still mezzed. I thought, ok, I'll kill you and rez you then all will be OK.
Nope, she's dead as dead.