What do I tell her

My roommate and I are from the same place and went to school together. She was friends with this girl name Hannah and now they not friends anymore. And I don’t know why. But me and Hannah went to the movies and we talked things out cuz I didn’t know why we stop talking. Long story short. She took a picture and posted on snap chat and my roommate saw it and post something on her story saying “the shit I just on my timeline and is fun and that bitches are fake and that’s why I don’t have friends” I didn’t see to post she made cuz I’m trying to ignore her. But Hannah saw it. And told me about it. Now when I first heard it I was pissed but I had a talk with someone last night and I don’t anymore because she is toxic and I want her out my life. The reason why is because my roommate got mad that I told her that I wanted to be alone in the room with someone. I told “ someone is coming up to the room and we want to be alone. 😁”. At first, she said ok then 2hours later she said “you could’ve said it nicer but ok.. im out y’all way... after class im coming to get my stuff and me and someone going to walmart.. im eating subway down the road” and I said that she took it the wrong way. Now me and my roommate carpool. Meaning she ride with me one week and I ride with her one week. Well that week she drove and it was cold out. So I took into consideration that she have a car and a boyfriend so while my and my someone was in the room. She can go and do what ever she wants. The next day she sent a message saying “ umm my bf is coming to visitation tomorrow and ya yk we wanna be alone... ☺️☺️” that’s what she said so I told her I was happy that you tell me because I feel like you and your bf didn’t want me in the room.” So I thought everything was over with that situation but it wasn’t she still mad and I don’t know why. And at this point I don’t care. She lie a lot, fake, two face. And I don’t know how to tell her I don’t care.

Btw: I don’t post nothing about her and I didn’t see her post.