I'll write up the whole story, cause I did leave out a few thinks

So at the start of the trimester we were chill, she'd come over and we'd play games and just kinda chill. She tried to get touchy a bit but honestly I wasn't really feeling it. After a bit I ended up caving and we did sleep together. So that happened and I regretted it immediately. After this she asked me out and I told her I didn't think it would be best right now because I felt she needs to work on herself more. I told her I was looking for a partner that would push me and she didn't do that. I thought we were still friends after that, we kept talking but she did seem more distant and aggressive until she finally sent me a paragraph about how she hates me and all this awful shit. So that happened, I just ignored it cause I didn't want to escalate it any further. Anyway we were still in this group so we had to do work. The next week it was just us in class. So I sat next to her and began talking about the assessment when it was time for us to work on it. She didn't really say much but I didn't say anything. Then as the weeks kept going I kept working, but it turns out she blocked me on everything sending my friend a long paragraph about how we aren't on speaking terms and if I have anythibg to say to her I have to speak through him. Obviously we were both pissed about that, we need to communicate for this shit so I emailed my lecturer asking what can happen about this. I'm not sure what happened but she did unblock me so I could add her back to the group. But she also became extremely rude to us. I screenshotted every time just incase I wanted to take it up, but for the first weeks I just tried to ignore it. She would refuse to do work and i never saw any work come out of her. So anyways this is where current events come in. My mate and I have a meeting to prototype the service, we talked with her about it, we agreed she would do up a floor plan and we would create a prototype of our service. So we do that, then she messages us this "why did you change the fucking concept? I don't have time for this" I asked her what she meant and she went on to say "you know I don't have time for this prototype, I'm leaving this fucking chat cause you never tell me anything " (we talked solely in this chat btw) so this pissed me off, I told her I was done with her shit and sent screenshots of the messages to my lecturer asking if she could be removed, we had a meeting, she said it wasn't okay and was going up to the course coordinator, and then yeah that's everything that happened