Is she just being nice?

So there's this girl I've been friends with for a few months and play with every weekend. Because I have more confidence with her, I joke more now and that has led us to tease each other a lot while we are playing with other friends.
She is very extrovert, I am whose she interacts the most, and likes to tease me in game, doesn't matter if we are on the same time or not, calling me asshole randomly and friendly. But at the same time we laugh a lot together, she seems to be focused on me (Maybe is just my impresion) and she was super excited when I bought her something for the game we play. Is she just being nice with me or that behaviour could mean something else? Because I don't see she acts the same with her other male friends.

Is she just being nice?
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