Actually, I hate confrontation, so would be glad if they overlooked my previous fault. Call me a coward!
I guess the OP can decide for herself whether to raise this issue. Perhaps she could question this person and say “but I thought that I confused you last time? I wouldn’t want you to think that my tuition was the reason for your exam results”.
So the OP could raise this or could let it go. Either way, I don’t think the past comment is grounds per se for refusing to tutor them again.
The OP described a fairly serious offense against someone else’s trust, not just a run-of-the-mill fault. I don’t know if this was a one-time very stupid mistake or a bad habit the other student developed at home with her family, but if not confronted at some point, a habit like that could kill this classmate’s chances of keeping any friends.
The OP might profit very much by studying with this girl or, if she is more advanced, from tutoring her. Teaching others is a good self-teaching tool, whether or not those you teach are particularly gracious towards you! So if she wants to do it, sure.
Absolutely, I think she can judge what to do, because she actually knows the person. I mean to assure her that raising the question directly is not an uncharitable thing to do, provided it is done discretely. The OP should not share the issue with those who have no business knowing it, let alone run the other student down with others, she should try to interpet the other student’s behavior in a favorable light where that is possible, but she should not feel that charity demands that she not confront the girl or that she can’t withdraw support that was previously rewarded by a violation of trust. Charity could even require the opposite. These are things we learn by trial: that is, this is how we develop our sense of how to read others and to decide when it helps to give them what they want and when it helps to deny them what they want.
I don’t think she has evidence she’s dealing with a dangerous personality, such that she *ought *to stay off the other student’s radar for her own safety. That would be true if the other student were to have exhibited a pattern of vindictiveness or deception. Stay far from that kind from the minute you recognize them; they can truly be evil. In that case, avoiding confrontation is very prudent, and not cowardly at all! It is better to simply avoid those as soon as you catch on to their mode of operation, but not to do anything to attract retaliation. Even when they are merely nasty, that kind doesn’t usually profit from correction, and often do almost inexplicably spiteful things to those who try to offer it. Cruelty, vindictiveness, and deception are the marks of the devil; wise people quietly put a world of distance between themselves and those who embrace any of those vices (rather than an isolated instance of flying off the handle and doing something like that). A propensity to shift blame rather than ever take it upon oneself is also a red flag.
I don’t think we have enough reason to believe that this other student is that type, though. If she has no experience in flunking, this test result could have brought out behavior the other student didn’t even know she had in herself. The rest of the class does not like her, as nearly as the OP can tell, but that may be because this other student is not socially adept, and may have nothing to do with this incident. If she is disliked because she tells lies, shifts the blame to others, and so on, that is different–swim with the class, and quietly stay away from her–but if she is only immature, then that is different. In that case, the OP might decide to give her another chance, yes.