Girl I've been talking to hasn't replied?

So, I was in a dance class with a girl that I have recently been talking to, I first messageed her on twitter then after little talking she gave me her number. I texted her the day after and we've been having very interesting conversations for about a week now plus we've even talked about how we're interested in each other so i know there was at least something there. But here's the problem, yesterday after a long day of talking i decided to tell her good night and go to bed. Ever since then i haven't heard from her? I texted her saying hey the next day as we usually do but I didn't get a reply back all day? Actually I haven't gotten a reply since. But here's the thing that stumps me, she has that mode turned on her iPhone where it tells the recipient that the message has been read and I know she hasn't turned that off because it still shows when other messages have been read but she hasn't read my message? So I really don't know what to think? We went from talking all day everyday for about a week to me not hearing from for a little over a day but she hasn't read the messages and that's the only thing that gives me a little hope so please just give me your opinions on what's going on, thank you!

Listen buddy, you can't expect a person to talk to you everyday.

The best you should be doing, is talk to her every other day. Girls can get annoyed if you constantly talk to them.

Why are you getting sad because she didn't respond after one day? Talk to her in like 2 days and ask her hows she's been and if anything new has happened.

AND IF YOU LIKE HER, Ask her to hang out! Trust me, I did it and you'll have a 50% of winning.
It's either a yes or a no. Don't be ashamed of asking her that, if she politely says no, then move on because most likely she isn't into you.

Trust me, this has happened to me before, but in a month if she says no you won't care.
If she says yes, then hang out with her and after tell her you had fun. And take it from there.

Goodluck! AND DON'T FORGET TO ASK HER TO HANG OUT! Trust me, you won't regret it.

Well Johnathan pretty much covered it and I completely agree. Beat me to the punch I guess.