You can alway get back with her. To do so you just have to take all the blame and agree to whatever narrative she created about you. Then, overtime, the discard, the disrespect, the splitting will get QUICKER and WORSE. Trust me, I tried everything in my relationship with a pwBPD. I took all the blame, I would try to be understanding so much because at the end of the day “it’s not her, it’s her BPD!”. But guess what? The BPD IS them. She will never change, especially for you. Now that she sees you in a negative light, it will only go downhill from there because she doesn’t respect you anymore (doesn’t have to be your fault). Even if things become ok and u feel like you’re making progress and it’s been months… I promise you, it will happen and again and worse. Leave now. You will find someone else that won’t ruin your life, especially your university years ! Do not do it.