What does it mean if a girl snapchats me a lot?

I recently started talking to this girl over snapchat. We knew each other before but didn't really talk. Then she asked for my snapchat and at first didn't really talk. Lately though it's been crazy we honestly snap chatted from 6:30 until like 5. We are eachothers number one friends on there now. She has been flirty in person too. She chased me around and playfully punched me for teasing her. The problem is she is pretty friendly to everyone from what I notice. Another problem is she was calling me gay and ugly the other day. I don't know if that is flriting or what. It doesn't bother me I just laughed and teased her back. I am planning on asking her out. I'd just like to get some insight here.
What does it mean if a girl snapchats me a lot?
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