I know I'm going to get slammed for saying this but in your case, I would be tempted to have an R talk with her and suggest going to a marriage councellor to work out your issues. She may be searching for something but she doesn't seem to want to lose you.
M35 W37 S9 D6 M12 yrs Know 15 yrs Bomb 1/28/07 My Sitch Failure is the opportunity to start again more intelligently - Henry Ford