What’s with this girl?

I (25M) went out with a girl (23F) a few months ago. Long story short, we hooked up on our 5th date and everything went downhill since then.

Initially she stated that she wasn’t at my place TO FUCK but to enjoy my company (after making out heavily and both of us being topless). After that we had dinner and I stopped making advances. Out of the blue she told me “Let’s fuck”. We had a good time, dropped her back to her hostel next morning along with a bunch of flowers.

Now I was gonna move out of the city for work the following week (this girl was studying in my hometown and I came there for a month long vacation). She asked me what are we and I asked her let’s be exclusive atleast to which she agreed.

Gradually her texts were drier and stopped picking my calls. Ghosted me for a month and when I called it out, she said she had exams and had to study (she was posting stories all the time but left me on delivered)

Now she tells me that her exams are over and she’s sorry for disappearing (she knows I viewed her stories) and she’s back now. Mind you guys she also removed me from her IG and when I asked her about it, she never replied. What’s wrong with her.

EDIT- She cooked me dinner the night we hooked up, I don’t think so you do that for casual hookups.