I made a dancer sad, what do I do?

She's young and I think I actually hurt her feelings inadvertently.

I really vibed with her hard made her giggle and I could tell she actually thought I was cute and I was gone for a month and texted her back and forth and she always replies quick and would send me really nice selfies.

Well I came back and went to the club not knowing she was there that night and saw a super hot girl in stage and walked up to her and she giggled all flirty like she thought I was cute and I said, "What's your name?"and she stopped and turned her head and slowly in genuine shock and sadness said, "whaaaaaaaaaattttt?" Not like shouted it just said it slow and painfully and then she said, "you know me, I'm ______." Well she lookes really, really different because she changed up her makeup and hair but still I felt really bad and you could tell she was genuinely uncomfortable and hurt and she avoided me hard.

Then I texted her and got no reply, then a week later, then a week after that. No replies.

I actually feel bad because I could tell she actually was a little attracted to me, talked to me really open, gave me her personal number and always texted back, etc.

I hope she's doing better and hopefully gets a better life than this :( I feel like an asshole