Was I wrong? Or did I made the right move?

to make a long story short, this girl and i were part of a friend group but from the start of her coming into this group, it has ended with her somehow sabotaging my friendships with people in this friend group and spreading insane rumors about me around campus. I've since stepped away from this friend group as, from what i was seeing, they was not defending me with all the crazy stuff she would say about me and a person who i've known for 5 years prior to meeting this other girl would tell me that the reason why nobody wanted to say anything to try to ease the situation between us two was because "it has nothing to do with them" and that they aren't on anybody's sides which was something i found hard to believe. Anyway, fast forward towards a couple more months of hearing all these rumors this girl was spreading about me, i went to my university's student conduct office and told them everything, listing the different things i would hear her say and they things she would do when she saw me in public and they decided it was best to initiate a mutual no contact directive between me and this girl to try to give her the hint that I wanted to be left alone by her. did i take it too far with the directive?
Was I wrong? Or did I made the right move?
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