
it’s fine to approach, but you have to do it in the right way. Like don’t interrupt her while she’s in the middle of a set. I know that sounds like common sense but it happens way more than you would think. Also, don’t be creepy, if you give her a compliment or try and talk to her and she doesn’t reciprocate just walk away don’t try and push it.
Like #2 said, approach at your own risk! Make sure she's not actively in the middle of a set and honestly, if you are approaching someone, I would approach a girl you've seen there a lot. If she recognizes you at least, she's less likely to be creeped out. I would start out with "hey! my name's _ l've seen you around here a lot just wanted to introduce myself. Its cool seeing familiar faces" or something like that