Is my ex girlfriend just seeking attention or out to get me?

Ok me and my ex were dating on and off for about 10 months then we broke up because she was lying to me always nd she cheated nd was always listening to everyone else to wanna break us up But yes it takes two to tango so yea I fought her a few times....Now everytime she sees me in the hallway me and her walk past each other of course cause we had a nastey breakup. Shes lied on me many occasions tryna get me in trouble with the principle saying Im harrasing her when I do no such thing nd everytime she gets denied because they know its not true. Everytime someone asks her about me she says me nd shes over me nd shes sick of me nd ima nd etc. Just recently I got sick of the things shes saying about me & i went to my counciler on what I should do nd she wanted to file a police bullying report but I told her no i wanna give her the benifit of the doubt like im always doing. So they wanted to set up an mediation so me nd her can work it out. Today when she found out she went up nd down the hallways yelling the principle nd me nd the mediation nd shes sick of me , but truth is im only tryna save her ,....What kills me is I keep caring for her but everytime I do she gives me her to kiss, she dates the friends we use to hang out with, she downtalks me,she claims she dnt wanna talk to me nd shes dont but everytime its always sum, maybe its me just tryna hang on to sum thats already gone or maybe she just never cared as much as I did in the relationship that I care nd cry for her everyday and she sits there having a great love life its seems to me chilling, idk what to do anymore...... so ONE what should I do? nd TWO do you think shes prob out to get me or just seeking attention in a negative way cause shes hurt?