Girl's Behavior

Girls, What does it mean if she sends me snaps and posts them on her story?

So, this girl and I became great friends during the school year and after the last day of school (we are in college) she adds me on snapchat, and we have been snapchatting pretty constantly. And we are kind of a thing, I suppose we are at the "talking" stage. We have gone on several dates in the past. However, this week she is on a trip to Florida and so she is posting a TON on her story, but also sends me the same snap personally, and sometimes some snaps that go up on her story.

Why does she do this when I assume she sees I always view her snap story?

(Subquestion) She went with a club she is in at school - and I am concerned she will lose interest in me because of this trip or she will meet a guy or something and start talking to him. Please tell me I am insane for thinking this and it is just my mind for irrational thinking.
Girls, What does it mean if she sends me snaps and posts them on her story?
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