I need help from some high school girls?

Alright I'm a guy, and I need to know what happened so I can help it.

I have this friend I am in love with and we texted a lot, like hours at a time, well one day, we were just sending jokes back and forth and my last one was a silly pun and I said "sweet dreams" and she said "goodnight" and the next day I got home from school and I said around 7 "How was your day?" And she didn't reply but she saw it and I figured she didn't have a good day so I waited a day then sent, "how was the trip?" Because I knew she was going on a trip to ward Meade and she saw it, no reply. I was a little frustrated at this point, so then I just put, a question mark, and she put "..." and she talks to me at work on the weekends like nothing is happening but she hasn't texted me back for like a month and I'm hurt because I love this lady. And i don't even know what the hek happened, Tried bringing it up, but we don't get very many breaks and it's just awkward.