FINALLY, I managed to isolate her in a corner after many tries. She was always going back in her group and I cant handle 2 zombies with her, they hurt too much.
You can see OW doing the job on this s/s

http://i48.tinypic.com/9isps7.jpg
1h28 of fight later in the cemetary....
http://i46.tinypic.com/2ev3ntc.jpg
Why the fuck I did this quest by the way....anyway going for Cain now!
Thanx for following!
Nataure
I'm impressed.