My suggestion is to agree, agree, agree. Tell her that if you were her you would be saying the same thing. Tell her that you are a douche and a liar. Tell her she is justified. But only if you feel that way, that is. Then and only then can you perhaps get her to do this one last ditch effort to ensure that you did everything that you could possibly do to make it work. BUT...you have to really dig deep and commit....no more lying, get on the same page with parenting, etc.