Why isn't she texting me back?

She maybe is busy or has some personal problems going on. Don't text her and when and if she's ready she will text with an apology or a reason why she wasn't replying. If she's interested, she'll come back don't worry :)

Some people are not as dependent on their phones as others. If she's interested she'll answer in her own time. Meanwhile, what harm is it if you ask her how she is when you see her. You will see her reaction, which is much more informative than a text message.

She might be busy just give her some time she'll start wondering why your not texting her and will text back

She's just busy , be patient

Shes just nervous. She might see you as too straight forward. Make baby steps and don't try to sound too needy.

Some people can text certain days for hours at a time then they don't text at all or very little for a few days. She's probably busy or sees your hey what's up as too casual. If guys text me that sometimes I don't answer bc it reads like they don't care much or too scared to say something sweet. If you like her then call her. Or better yet ask to see her then you can talk and flirt in person. In person is always best!

So don't worry just try getting a hold of her another day. A call might be better than a text for this girl.

Honestly no one is too busy to send a text saying, I'm busy can't talk right now. Maybe she just doesn't want to talk to you, not being mean. But you should go up to her and ask her is everything okay or something to find out why she's ignoring your texts