I would just say when things like that come up with the girls, you should change the topic and make sure that those things are between you and W. They do not need to know all of little issues. THey just need to know that you both love them and it just did not work between you two.
The problem is if they know all the issues then they can carry those into their own personal relationships. Even if W is saying this stuff to them, you should just say something to let them know you heard them, but then change the subject. Maybe talk to W about the issues because when it comes to the girls, it is not good for them in the future.
On a side note, can you check out sitch? I need some advice.
Me29 S3 H left 4/1/09 I file 8/2/10 Divorce final 5/17/11 1st http://www.tinyurl.com/25lhu52 2nd http://www.tinyurl.com/2c35ueg 3rd http://www.tinyurl.com/322yk89