I don't necessarily think the friendship is over. However, she clearly needs space. Honestly, you should also take it. It would be pretty bad for you mentally if you kept talking to your friend, considering your feelings about the situation are still fresh. I would try and focus on other things, go on some casual dates, hang out with friends, try some hobbies, etc. Maybe things will be repaired, maybe they won't.

Been in a similar situation and it sucks but as cliche as it sounds, give it time and it'll get better.

That legit sounds like anxiety. You're overthinking your past situation with this girl so much that when she's there in person, it causes you internal panic. Rest assured it's not love, but mentally this clearly has taken a toll on you. Either you talk it out with her about your falling out (easier said than done) or you just avoid contact (not healthy either). Good luck!