What to do with this girl?

I wouldn't ask her cousin cuz she's just gonna tell her what u said...so why don't u just ask her? It sounds like she likes u but I'm not too sure cuz u didn't give much details haha but if she does like u she'll love it that your steppin up and makin the first move. Just ask the worst she can say is no an if she doesnt her cousin will. Good luck :)