Your unintentional ice-out worked. I just had one of these work in my favor as well.
She is interested again. She wants your attention.
She also gave you her number for a reason. Don't be afraid to use it.
Find out something she likes. A song, a band. Text her that you were just watching a show and you heard a song from them that made you think of her.
Add in a smiley. We love smileys.
She will most likely reply and be touched that you thought of her. Next text, tell her you want to get together soon. Try and think of something creative to do with her- something that will get her excited, get her talking to her friends, building your rep.
Try and see yourself as an equal to her. She needs to be just as grateful that you are giving her the time you are. This will help you stop being afraid to address her.
This girl clearly likes you. I have no doubts you'll get what you want
Good luck.-w.