If you are 100% sure, expose her for the whore she is and then kick her to the curb.
There is no need for you to worry yourself about her any longer. While she continues to lie and cheat behind your back there is nothing you can do anyway...and why would you want to?
You deserve more. You deserve better.
H: 38 W: 36 S: 8 S: 5 M: 16 Bomb: 8/25/08 OM: 9/21/08 EA (Possible PA) with co-worker since 5/08 (at least...) Sep: 9/21/08 D Filed 9/23/08 My Situation