I think accepting her behavior would be a sign of your denial. You are being honest and seem to have expectations a normal human being should have. If you didn't, then I'd worry. It's more than OK to hate her behavior. Isn't that why we are all here? To find validation when the insanity is too much for us to handle alone?
Just my .03
Heather (I gave myself an extra penny :-)
"You know, it's times like these when I realize what a superhero I am." Tony Stark/Iron Man
“Focus on what you can do, then do it with all your heart.” Lois Wilson