Has any women ever been screwed over after the divorce?

My sister got married to a money grubber. She had a home and during the marriage she was the one who made all the mortgage payments. They were married for 8 years and during that time the equity in her home skyrocketed. They got divorced, she had to pay him $70,000 in the settlement because that's how much the value increased while he was living there. How much does that suck?