Girl likes me or am I over thinking?

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

Girl likes me or am I over thinking?
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