Well its cool you have already learnt from it as now you know for next time that you should of kept the playfull/banter side of things going while at the same time as getting to know her.
When it comes to salvaging the situation I would maybe wait a day or two since you text her last and just text her something funny- some sort of statement, maybe refering back to something funny you both talked about. Dont ask any type of question, as a statement alone shows you are completely free of outcome/non-needy as you are not looking for a reply back in anyway.
I recently heard a podcast with Sasha daygame and Rob Judge where they said if a girl turns flakey all you have to do sometimes is give the girl time and stop pushing for it. Go meet other girls then in a week or two maybe text her again as situations can change as well as her mind.
So I would say shoot her a funny value giving text and if you still dont hear anything, relax and come back to it in a week or two.
Hope this helps