I don't know man, if she was talking to you always a good sign. If she really thought you were freaking weird or a moron for being high, I think she would have stopped talking to you. Also, I'm always surprised how easy it is to cover the fact that your high, as long as you aren't SUPER blitzed. Not sure where you were, but you drove and walked around and such, so I'm assuming you were decent. Also, what is your professor going to do? As long as you don't have any on you, he can't get you in trouble with the school, and if he is any kind of professional his personal opinion of you won't matter when grades come around. As long as your eyes weren't bloodshoot you should be fine.