Wow, this looks like a chapter straight out of my life. My mother is the exact same way, too. Today I politely asked her and my dad to leave my apartment because it was time for the baby and I to wind down for the night (my husband is on an Air Force tour in South Korea for a year). My mother refused to stop cleaning (boundary issues with my things) and said she wasn't leaving until she was done. I again politely said that I will finish things up and she said I wouldn't do it right and she may as well stay and finish. Trying not to lose my cool, I informed her that by her refusing to respect my authority in my own home, I felt threatened. She ignored me! My dad saw that that was my last attempt at a peaceful resolution and stepped in. She argued with him, too! She also tried to make me feel guilty by saying that she felt really sick but I NEEDED the help. I had told her I didn't ask for help and I could manage things for now.
My counselor believes she had Borderline Personality Disorder. Complete disregard for others; their reality is THE reality; total lack of empathy; manipulation of situations in order to be the hero of the story. You should really look it up.
I told my husband what happened today and he's had it with her. She's no longer allowed over. Period. I've spent the past year trying to patiently teach her appropriate behavior by using an emotional reward system, but she is accountable to no one. I almost made her regret continuing to verbally abuse me and run over me like when I was growing up (there was plenty of physical abuse, too, which she conveniently has no recollection of).
One day in church, she refused to give me back my crying baby and pointedly ignored me while I quietly demanded her to give me my daughter who was hungry. She knew I couldn't make her do anything in front of so many people. For the first time in my life, I was having to hold back a feral instinct to kill her because she had my baby and was not giving her back. I leaned over and said under my breath "Give me back my baby or I will end you." She gave me a shocked look and... kept my baby.
Some people can't change, but you can protect yourself from women who try to take over the hive. It never gets better. I tried everything possible for years, and I have never been treated like a daughter by her. Meanwhile she openly brags about my older sister, drops everything she's doing to roll out the red carpet for her. She even made her the honored guest of my baby shower... and made me set up all the decorations and clean up so my sister could relax! I was 8 months pregnant! Women like these are seriously sick and feed on scapegoats like us. Run.