My Sister Keeps Bullying Me?

Hey I'm Amy and I am 13 and my Sister Becky is 15 but this morning i woke up to her in a bikini and she started farting In my face and she wouldn't stop until I agreed to do all her homework and then I said could you open a window I don't like the smell and then she says too bad If you don't like the smell and then she says goodbye face and then she left my room, In the Evening she asked me if I liked minge I didn't know what that was so I asked what it is and she said just say yes so I said yes and then she puts my face in front of her and queefs in my face then she runs downstairs and laughs hysterically then I started crying, Guys please give my sister some advice about her jokes because I don't like them Thanks.