Does she like me or only see me as a friend?

I have a female friend that I often question my friendship with because of her behaviour. Here are some things I have observed from her:

-She will only nitpick and be playfully mean to me and no other guy.
-She likes to play hot and cold.
-In group discussions she will stand very close to me or if she stands away from me she will look at me from a distance.
-If I am upset or not in a good mood she will check to see if I am okay.
-I can get away with saying certain things to her that I’ve noticed other guys can’t get away with.
-She said to me numerous times that I am the only guy she trust.
-She never talks about other guys to me or mention how attractive other guys are.
-When I am not in class, she will sometimes text me that she misses me.

Furthermore, the other day I left school early because I had a unexpected situation come up. I left without saying goodbye to her and then 30minutes later she calls me to ask why I didn’t say goodbye to her and that she was worried about me.

What is your take on my friendship with this girl and how you suggest I move from here.
Does she like me or only see me as a friend?
Post Opinion