I Have a Younger Sister

I let her have her say and now I want to be alone. I'm getting pretty sick of her taking things out on me. Every interaction with her lately just reminds me why I enjoyed living alone so much. Now she wants to hang out. Nah. I want to relax. I'm the responsible one in the family, I get it, but I'm not responsible for what's bothering her. She can go work out for herself the root of her problems. It's not going to be me; I know that much.
Wanna vent; go for it. But you don't get to disrespect me. She's constantly doing that now. Well she can go figure things out by herself. I'm unable to help her right now. Sometimes, even offering an ear isn't going to help someone. She needs to have a serious think. Somewhere away from me preferably because I deserve some rest too.