If she's not grumpy or trying to kill her neighbors or being pregnant(10 times already, raised the kiddos to adulthood and they moved off to enjoy their own lives), she is happily trying to eat her husband's face. He doesn't complain. If I could explain wtf happened with her it would just be easy to mention Raziel from Soul Reaver - nearly same scenario of the entire life-death-rebirth (her resurrected vampire self is about - her ghost self is about - her zombie self is about too- sometimes all three meet up @_@), my Sims 3 game is a clusterfuck of glitches. I'm astounded!  I'm pretty sure the shenanigans going on with her is simply because she's a vampire.