I have a problem, i could use an answer!!!?

there is this girl i asked to be my gf, she said she wanted to focous on school this year, but even after she said no, we still flirt alot, one of my best friends asked if we were an "item", and recently she asked me to go to san fransisco with her and her mom( wich isnt a small thing because of where we live, we live like 2 hours from san fran), so now i dont know what to do, im getting mixed signals