Questions: Girl's Behavior

Also what kind of feelings do you get when you get to see any of these?

i'm an assistant professor at a university, and i'm the research supervisor of a female student whose behaviour has confused me. the girl is usually distant, and i have scolded her very severely at times to which she just rolls her eyes or frowns but always stays quiet. recently, i gave her a research task to do which coincided with her exam schedule, when i insisted that the task has to be completed at any cost , she got a quite rude and said that she WILL NOT do the task since its not part of her research (Although it was) and that she has exams, i asked her to hire an attendant to do the job, the attendant asked for more money than she could give so she got rude with me and she that she can't do the task at the moment but the task was urgent. i am also her teacher for a subject. i was very mad at her for her behavior. the next morning she came with the amount and said that its for the attendant to do the task, but i refused, upon multiple refusals to take the money, she started crying hysterically and she starting shaking. i told her its okay i'm not going to fail you, but she was crying like somebody had died and said ' I'M SORRY SIR... I'M CRYING BECAUSE I FEEL BAD THAT YOU FELT BAD. I GOT FRUSTRATED. I'M SORRY.' she went on crying and refused to leave unless the money was taken from her. then i took the money and she left. i couldn't understand the reason why she was crying like that just because i felt bad? is she attracted to me? is she in love with me? or is she just afraid of failing? PS. the girl is very pretty.