My wife’s mother died when she was 13.  Her father raised her and her younger sister and did a great job of it.  When I met my wife we were both overseas and I remember being told what a wonderful man her father is.  He remarried about 15 years ago.  His wife is a Narcissist who never accepted the fact that he has 2 daughters even though she has 3 daughters of her own.  For the past 13 years that I have been in the family I have watched this woman use passive aggressive techniques to slowly dismantle the relationship between her husband and his daughters, who have been falsely accused and blamed for the deterioration in their relationship.

Since the start of this year, we decided enough was enough and have told him what we have witnessed and that we were not prepared to accept this kind of behaviour anymore.

He does not see it and both of them are incapable of ever admitting fault.  Is it possible for my wife and her sister to have a decent relationship with their father while he is married to this woman?

Much appreciated.