I am assuming you want out of friend zone and into a relationship zone? first off I would make sure that other person is on board before trying to get out of friend zone.... ask a few questions-- like: so what do you think of me? would you ever date someone like me ? stuff like that.. just general questions.. that doesn't put that person on the spot... you can get out of friend zone and into relationship mode pretty easily actually... when the sparks are thre on both ends... good luck!
I've never really heard I this happening, it takes quite a long time. I'd suggest to leave her alone. Just completely ignore her for a long time, then when she wants to start talking, and taking things to the next level, put her in the friend zone.
Since you are, now her/his friend. BEST friend, even better. Do not talk to him/her, deny all calls, messages, etc. She/He would probably be desperate and crawl to you, and tell him/her why you been ignoring him/her.
AdR1aN15 is pretty accurate on that all you need to do is mess with her head, making her realize how much she needs you, maybe like wait a week-month, (when ever you think she may just forget about you) then text, but don't just text like how you where, hit on her, complement the S*!T out of her and make her feel special and make sure she knows, you want to be more than friends or you'll never get her.