( Elijah )
I don't think I'll ever be able to forgive her for that. If she hadn't done that, Jeremy wouldn't have died, Bonnie wouldn't have died, Stefan wouldn't have ended up at the bottom of that quarry for months, and everything would be less of a giant mess. Plus she was the one who handed Jenna over to Klaus. And a lot of other things. Trying to kill me? Pretty low on the list. She's done too much for me to ever get past it.
But Katherine's been screwed over a lot. I think, if she let herself, she could have a real chance here. If nothing else, one of these magic types might be able to fix her whole aging thing.