What should I do?

Im still pissed off with my sister. She always notice what i am doing even not necessary.

Does she wants to fight with me? She's so mean, you know.

She acts like she knows everything. She's older than me but it doesn't mean she can treat me like this. Maybe she's smarter but just because she has a lot of experience than me.

I want to have a good relationship with her but it seems she doesn't want to.