Don't next a chick for something that small, it is annoying but people make social mistakes all the time....
Is she giving you a good vibe otherwise?
I've been out with chicks who do something I don't like, then as things progress they become more involved and more into you and change, can also work in reverse.
I have been on a date that I though was boring for the girl, she did little irritating things like talking on the phone when we were hanging out...and she ends up blowing me in my car.... you can't always read someone else correctly...
Is she giving you a good vibe otherwise?
I've been out with chicks who do something I don't like, then as things progress they become more involved and more into you and change, can also work in reverse.
I have been on a date that I though was boring for the girl, she did little irritating things like talking on the phone when we were hanging out...and she ends up blowing me in my car.... you can't always read someone else correctly...