Welcome aboard. Know that you are among friends here and have all felt exactly like that. She is not better than you and here are a couple reasons:
1) You still want to work on your M despite what you've been through. What kind of marriage material could this girl make to anyone? (feel sorry for whoever does). BTW A partners don't usually marry so it'll probably be someone more messed up than her. 2) You have two wonderful kids that I'm sure you have raised magnificantly. She has little respect for herself or the concept of family (likely has the emotional maturity of a 5 year old, "i want, i want"). 3) You are a survivor. She is a looser that has to cling to a married man for attention (seriously that's just so pathetic on her part).
I don't know if this helps but felt good ragging on her and trying to cheer you up=)
H 30 (me) W 28 Married 9 yrs 2 children EA found out on 7/5/07 ILYBNILWY 8/25/07 The unexamined life is not worth living -Socrates