If you feel up to it, I'd definitely take a chance of telling her how you feel. You might be surprised. I had a girl who is straight (was only with cis men before me, and only with cis men after me) interested in me, before I started physical transition. She told me it was never weird for her. The only thing that was weird for her was when people saw us as lesbians out in public. But it was because of the dirty looks we got, it made her angry and sad because she didn't think anyone deserved that when they were just going out trying to live life. I know she saw me for who I am.