She randomly stopped texting. Girls what would cause this girl to do this?

Anonymous
So I texted this girl on Friday night and she didn't reply for like three hours or so and by that time I had gone to sleep. She then texted me "heyyy" the next day and I didn't reply at all. I then texted her again on Sunday night and she replied and we had about a 5-7 text conversation (we both replied within five minutes of getting the texts) and then she randomly stopped texting me after she said she was at her cousins house.

What is going on with this girl? Does this mean anything?
Updates
+1 y
Not sure if this changes anything but today in front of a lot of m friends she said "way to not reply to me" in kind of a sarcastic/mad voice
She randomly stopped texting. Girls what would cause this girl to do this?
10 Opinion