Is this another sign or hint?

Hi.
Long story short, there is a girl I like, I think or I feel 70% sure she likes me, and I know 100% that she knows I like her.

There has been quite some history with us over the last year at university and we kind of know each other a little.

she showed up to class and looks good but today she looked lovely.

This time it is different as she had a shirt that shows her back slightly but she wore earrings today and she never wears earrings.
She went home early as she told me she is tired and going home. I had a feeling that I should turn around a say goodbye to her as she seemed to be waiting for a few seconds longer.

When she was standing up she brushed her hair behind her ear to reveal/show her earings.

I saw and commented and she spoke about the material which she didn't know about and said she has no idea what it's made from.


Is this hinting or a kind of flirting?


Thanks.
Is this another sign or hint?
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