We really don't know the person your asking about, or exactly how your relationship currently is.

I've kissed straight women, lesbians, a gay guy (which resulted in some backlash from his friends for me disrupting his... normal inclinations.. but hey, he kissed me). I'm a woman and I'm straight-ish. So it happens. The answer to "is it possible for a woman to get another straight woman to kiss her" in the most general sense, is yes.

No one here knows if it could happen in YOUR circumstances... because it's a specific situation with specific people, not a generalization. This woman you speak of could be someone who is borderline homophopic for all we know (worst case scenario, yikes)

With what we actually know about the situation based on the info you gave and the type of question you asked in general.. you'd be just as well off asking a magic 8 ball.

Once you get to know her you'll find out the answer naturally.