However I have to tolerate her because she is my sister.
Is she making things more challenging for other people?
I'm not the only one who tolerates her.
Siblings can sometimes be difficult to get along with so it is okay to sometimes only tolerate them. That means at least you are trying to get along.
Otherwise I would have left a long time ago
Well keep trying your best to get along with your sister. She is family and may just be going through a phase as she is growing. As family you want to try and love her the best you can.