If he called out to her, but she turned her face away, the guys surrounding her said he doesn't want to talk and she doesn't do jack to speak for herself, then it is time to move on.
We know she's playing hard to get, but regardless of her intentions, she's putting all the barriers up so he'll continue chasing her. I had this done to me in the past, I tried to befriend this one girl that was romantically interested in me but she kept putting barriers expecting to break through all of them for her sake, but the only thing I did was stop trying because she had communicated that she didn't want me near her.
I only came to realize what she was doing years after the fact, and honestly, I dodged a bullet.