I went back to my parents' house to visit my father's grave. My older brother and his wife live there. My older brother is currently on a business trip overseas. There are only me and my sister-in-law at home. I felt a little awkward and was thinking about going back home, but my sister-in-law said, "There's something I want to talk to you about," so I decided to listen to her. It was about her marital relationship, and apparently things haven't been going well between her and my brother lately. As I was giving her advice, it got late at night and I ended up staying at my parents' house...