Why did she leave me on read? Should I even bother?

BernardMappz
I'm 15 years old and pretty good looking. this girl from my school that I don't know but she's "apparently" seen me a few times, added me on snapchat (She probably got my name from her friends) and she said "hey" and we had a normal conversation. She seemed to like me. After she went to the city I decided to leave her alone because it would be annoying if I kept texting. At about 9pm I got tired and sent a snap saying "Good night 😚" and she left me on read. And since today she didn't reply. Should I even bother or should I play her game back?
Updates
+1 y
And she was definitely not busy, she put up like 4 snaps on her "Story"
Why did she leave me on read? Should I even bother?
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