Although pump is right about some of the stuff like not trying to impress her and stop caring if she likes you but i personally disagree with the stop texting part. Texting is getting bigger ad bigger and alot better for gaming. Name a single person that doesnt text now-adays. Its a simple way to talk without the pressure of rejection. It can be a fun and easy way to quickly flirt.
My advice would be tojust have a good time. Keep the text light and flirty and FUN. Because if youre having a good time texting her, shes probably having a good time as well.
With some of the girls i text i like to play a game i learned on this forum (i wish i could find the thread again) but just tell her that for the rest of the night every sentence has to end in , "in bed"
ex
What are you doing...In bed?
im just debating on taking a shower, in bed
oh so you like to be dirty in bed?

its a fun and easy way to get things sexual