AITAH for ending a friendship and acting like this person doesn’t exist anymore because I got sick of her behavior?

So, I had a friend , at first we were really close. She shared everything about her life, especially her relationship with her BF, and I knew every detail. But over time, she started lying and contradicting herself. (I won’t get into specifics out of respect — even if I wouldn’t be her friend again for anything, I still have empathy for what we shared.) Eventually, I started noticing how fake she was. She acted one way around others and a totally different way with me. It rubbed me the wrong way. Just being around her started to irritate me. Everything she said or did felt off, and I decided to cut her off completely. The weird part is that even after I distanced myself, she kept trying to involve me in things , even told her mom stuff to make me look like the bad guy. I never owed her anything, and honestly, when I stopped talking to her, she should’ve just let it go. To be honest, I now feel disgusted even seeing her. But I’m wondering… AITAH for just cutting her off completely and pretending she doesn’t exist anymore?