Her name is Hana Clara. She is your ex girlfriend as she broke up after believing her bestfriend blindly she got angry for first time and broke up her friendship with her a lot of friends as who knew her plan but never tell her and it was out of sudden as she never shouted at anyone before this

She came at john's apartment and look very sad and depressed after you open the door she looks about to cry

(Hana): "Please Listen me one time!"