Is it normal for siblings to constantly fight?
I am really worried about my younger cousin. She is 12 years old (old enough to be somewhat mature) and she has a brother who is almost 10 years old. Whenever I see her, she is always fighting with her brother. Sometimes, it seems like SHE starts it, even though she should be the older and more mature person. Sometimes, she physically hurts him. Nothing serious, maybe pinching or pushing. They are so on-off. When they were little, they were so close. Then, they started fighting. A couple of years later, they were close again for just a few months. Then, she said they started fighting. Now, they are like half close and half not. This is really confusing to me. Is this normal?