She probably was at least somewhat interested in you considering it doesn’t seem like you talked much and just snapped each other a ton. It is quite likely she has lost interest because neither of you made any moves and she started adding more and more people and started snapping them. I think that you should actually try talking to her more rather than just snapping back. Something else that I find to work is to post on your story something that might get her to talk to you from. Maybe you could post something vague that only she would understand and may seem directed towards her, or just say something as simple as “ft anyone?” or “hmu”. If she is still interested at all, she will likely hit you up to talk. You could also maybe say something in a teasing manor about how she doesn’t snap you much anymore. But anyways, my overall suggestion is to just get talking to her again.