My parents couldn't stand Isabel, and they had some good reasons. They actually visited us a few times, and Isabel was a terrible hostess. (The house wouldn't be ready when they arrived, for example, and I had to do everything.)
Two weeks before our wedding, my husband's parents called to tell him 1. they weren't coming and 2. he shouldn't marry me. Since then, I have gotten along with them about as well as you might think. PS They died hating me and disinherited my husband.