Hi Newlifestartsnow,
It is very normal for students to have crushes on their professors. I’m sure you’re not her only fan, and even if she somehow found out, she would be a pro at handling it. Nothing to be embarrassed about, unless you do embarrassing things.
AFTER you are a student, and IF you’re quite sure she swings towards girls THEN make your feelings known. MAYBE.
I would view her as a rock star or movie star that you will never actually know in your everyday life.
Best,
Inky