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The original was posted on /r/AmItheAsshole by /u/Old-Temporary7682 on 2023-10-04 16:00:27.

Sorry if anything sounds weird, English is not my first language and I’m not good at writing in my native language. My Brother and his wife is temporarily living with us because his house caught on fire because his wife microwaved silverware. I didn’t mind them staying over as long as the follow my limited rules (I only asked them to clean up after themselves and respect how I parent my kids. I mostly included the second rule for my SIL.) Yesterday, my son stayed home from school because he was sick. Everyone but my SIL were at work/school because she doesn’t have a job. My SIL always criticized my son because of how his long hair makes him look like a girl. She decided to cut his hair while he was sleeping and he was devastated. When I got home he told me what happened then I told her she had a week to leave before I called the police. She told my that wasn’t fair since she did him a favor. She said people would make fun of him for having long hair even though it never happened in the 3 years he’s been in high school. I told my brother he could stay if he wanted to because he had nothing to do with it. Everyone but my mother and SIL agrees with me but they are calling me an asshole because I unfairly kicked out my SIL. So AITA?