My college girlfriend had a mother from Hell, because she was a chronic alcoholic. In fact, she was committed by her husband for treatment 3 times.
Among the standout moments: when her daughter was getting married, the mother insisted on controlling the entire 300-person guest list. When the daughter said she & her fiancé wanted at least 50 invites set aside for friends, the mother replied: "You two don't HAVE 50 friends."
I avoided her parents house when I could because of the abuse I myself received. One time we dropped by, and her mother asked me what was new. I answered: "Not much." "Well then what's OLD, Bob, besides YOU"? she replied. She didn't like the idea I was 6 years older than her daughter, though both of us were in our 20s.
Another time I paid for her daugher's tour of Florida with me, including reservations at Disney World, visiting the Keys, the Everglades, etc, a complete vacation itinerary of several weeks all at my expense. Half-way through it the mother phoned and said her daughter had to return to New Jersey immediately, there was a family emergency for which the mother needed her.
I was dubious and argued against going, but my GF, with tears in her eyes, said she couldn't refuse her mother. So I canceled everything and arranged transportation back for both of us, losing quite a bit of money over it. Needless to say the parents refused to underwrite the added expense and lost money, saying since I had brought their daughter down I should bring her back.
When she got back home it became evident there had been no emergency, other than a reception or something the mother wanted her daughter to help out with. And the mother could barely remember her call to Florida, having been so drunk as I had suspected. But I felt more sorry for her suffering daughter than I did for me.