Is this a good sign from a female?

So this co worker that me and her been play fighting at work lately. Today she didn't greet me, instead i waited a couple of minutes after my shift, and i started messing around with her playfully, i started by lowkey tapping her hat off of her head, a couple seconds later she reciprocates the same action towards me., its like she was ready. Is that flirting?

Is this a good sign from a female?
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