I don't know to be honest. Eye contact is pretty standard, and we share glances whenever we pass each other on campus for the most part. I feel like I am normally the one who initiates it, but sometimes (2-3 times) she has. Other times though I feel as if she just looks past me / ignores me (3-4, a couple times) and doesn't convey that she notices me. But she might just do that so I don't catch her looking at me / her coming across as "weird"??
A little more information since you all seem interested; we have one thing, that is a pretty good starting point, that we have in common. And she won't share this similarity with many other people, if anyone probably like 1 person at most that would approach her. So I am confident about the substance of a conversation with her, but worried about starting / initiating it or approaching her out of the blue..