i dont know la dude, but from what u drew, i think the girl doesnt have any interest in you.
looks like she is just being polite to you. as in you can be her friend, but not more than that otherwise she will feel uncomfortable.
she doesnt want to go luch with you, could be mean 2 things; she doesnt have money or saving money @ she just not interested.

but if still wana try, go on. good luck.