Date: June 14, 2017 09:20AM
This thread inspired me to Google "parental alienation," and one of the hits was a wiki page.
At first I thought that possibly it didn't apply, because the term applies almost exclusively to divorcing or divorced parents. I kept reading, and I'm sorry to bring it up, but would rather do that than not raise a flag.
Sometimes the offending parent enlists the help of family members in his or her cause. I'm not saying that your wife is considering divorce, but consciously or unconsciously may be contributing to your FIL's interference. She may have expressed "wishes" or "pain" about you that inspired FIL to feel free to intrude.
That won't matter to your daughter. Damage a parent is damage to her. Maybe it's a discussion with your wife, first, so that you don't "go in" blind.https://en.wikipedia.org/wiki/Parental_alienation