I agree. She was “well aware”. I think he totally could have hooked up if he hadn’t been an immature douche. You can see her getting turned off in real time.

He super liked her, I could easily imagine her reaction was to roll her eyes and swipe right to see what funny business this student has come up with.

Sure, she's risking getting fired just for approaching him in a situation like Tinder. A romantic or sexual relationship with a student could get her fired, but especially explicitly in exchange for a grade, which was apparently not her idea.