My friends husband is a selfish lazy prick and I have no idea why she is still with him! His version of caring for his children is weekends away, staying in bed til 11am on days off (does not work nights!) and generally ignoring the fact that she is run into the ground.
I avoid spending any time with him and don't mention him at all. If the conversation moves to him I simply state oh or what a shame then change the subject.
I also will drop in about what activities or evenings out I have had and what days out my DH has had with our children in the hope that she realises some time soon that what she puts up with isn't acceptable or normal!