&gt;I am very socially aware

I beg to differ, or you would realize how creepy it is that you think you can conclude whether a woman wants you from the dilation of her pupils.  If anything, I'll bet she's chewing her lip and fidgeting because your staring is making her nervous, and not in a good way.  Have you actually had a conversation with her that consisted of anything more substantive or demonstrated more of an actual meeting of the minds than "Here's your paper back"?

At any rate, she's your professor.  If she values her job, she's not going to do anything until there's no chance of that ever being the case again.  Ask her out after final grades are in if you absolutely must know, but I wouldn't get your hopes up.