My name is Sarah, thirty-two years old, married to Michael. Since the day we got married, we’ve lived with his parents, Thomas and Eleanor Brooks. It wasn’t something I ever found uncomfortable. In fact, I got along with my mother-in-law surprisingly well. She treated me like her own daughter. We went shopping together, went to the spa, talked for hours. Sometimes, when we were out, people even mistook me for her biological child.

But her relationship with my father-in-law was a different story altogether.

They argued often—quiet arguments, but heavy with tension. Sometimes she would lock herself in the bedroom and leave him sleeping on the couch. Thomas was a man of few words, always yielding, always silent. He often joked bitterly that after decades of compromise, he had long forgotten what it felt like to argue back.

Yet he had his flaws. He drank frequently and often came home late, sometimes not at all. Each time, my mother-in-law’s anger would erupt again. I used to think it was just the wear and tear of a long marriage.