Girl playing with hair while chatting?

I got ice cream and hung out with my female friend the other day and she constantly kept twirling her hair and putting it in her mouth while we chatted. She is shy and always seems nervous whenever I talk to her but whenever I ask to hang out she has always said yes. However, she has never directly asked me to hang out. The night following the hang out, a random girl requested to follow me at 12am. Turns out she is friends with my female friend's friends. Does my friend like me? Should I accept the request? It seems like a test.

Girl playing with hair while chatting?
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