Are these signs she likes me?

OK. so basically theres this girl in my math cl. 2 weeks ago i was sitting eating lunch and she just randomly sat down with me and started talking. it was kinda awkward and i was little uncomfortable. then the next week i wanted avoid her so i went and sat outside my cl and ate lunch, the minue i sat down i hear this girl go hey (my name) and smile. she then went around the corner for a few mins then came back and sat down next to me. we chit chatted and it wasnt awkward this time. we went to cl and the prof called roll and when she got to my name the girl turned around and looked at me. i decided to get her phone number yesterday from her and she wasnt surprised by me asking her as if she was expecting me to ask. A few days ago her roommate played a prank on me and i got really pissed at her roommate cuz it was a mean prank and so i txtd the girl and she was super apologetic and made her roommate apologise to me. Are these all signs she really really likes me?