Update:Ignore her. Just like she did to you.
Stop being scared to be an @sshole. She asked for it. Just be cordial, no more. No small talk.
Saw her today (evening class). She came in and awkwardly asked if I was okay. Maybe she knows she's been a ***** hence awkward/unsure tone. Gave her closed, disinterested responses. She then ignored me for the rest of the class.
At the end, she went one way down hall and I the other. Usually she always walked with me or told me to wait up.
Anyway, she text me to say she wasn't angry with me today with a "don't be silly".
However, compared to a few weeks ago where I blanked her when she wished me happy new year, her attitude has changed. More distant. Doesn't contact. Yet, when I blanked her a few weeks ago she would text next say "you okay?" then I would ignore. 5mins later "I haven't heard from you in a while". So doesn't like being ignored.
Which brings me to the present. What is the change in attitude? My theory is the Mark guy, who she was incessantly texting that time when we met up.
I will continue to ignore and not engage with her during classes.