These days, my sister took the children home, bullied me every day, and sometimes said that I wanted to die, and my sister didn't care much.

For such a young girl, she is usually very smart and lovely. How can a sister-in-law bully you? This is so rude. No matter how naughty a child is, he is not so rude. Your sister and mother can't touch her. This is the problem of not getting a good education since childhood, and this is the problem of parents. Children have been taught from an early age to respect adults, teachers and be a polite child, which is spoiled.