Ouch! That really sucks, NS. I guess you'll have to go back to a previous save now
Sorry the insta-kill didn't work on her. Something must really be wrong there for that not to work. Although I've heard that certain "bosses" are supposed to be immune to the cheat kill, and she may be one of them. I've never tried the cheat on her myself, so can't say.
Whatever, I hope it all works out okay for you in the end.
Nightowl2