the parents of the adult children who love us as we are should at least happy about all the love going around and place priority on that, not having a picture perfect DIL/SIL.
I agree to some extent Starblaze and certainly allowances can be made and understanding shown. I dont though think that all parents are necessarily looking for "picture perfect" as you describe it. More trying to get their heads around the relationships etc not maybe being what they had pictured, the nuances of different behaviours, their own ideas of "rudeness"/unfriendliness as opposed to someone elses etc. That is not the fault of anyone really, and is hard for everyone in relationships isnt it especially when it is such an important relationship. It can take time for some to accept differences, and maybe also priorities and certainly some never do which is where huge problems understandably arise.