If I ever have a daughter/son in law, I wouldn't treat them like shit because of who they are, how…

If I ever have a daughter/son in law, I wouldn't treat them like shit because of who they are, how they do things, or what they've done. If that's who my child is happy with or is the mother/father of my grandchild, no matter the situation, I wouldn't treat them like shit. I just don't understand how my MIL can treat me like shit, and feels she has the right to because I'm in her house. Like that isn't a reason to treat anyone like this, and then complains how nobody likes or wants to be around her. of course not, how could anyone want to when you treat them like shit.