Should I tutor a student who I know has cheated on their homework? I am a Ph.D. student and I do private tutoring on the side for extra income. Recently a new student contacted me for help with a class, and I met them for one session, which went well overall. They told me they liked my tutoring and want to meet again. This student admitted that they are behind on the course material and are trying to catch up before the final (which is just about two weeks away). However, I recently realized that this same student is in another class which I am TA'ing, and I was grading the homework today and realized they copied the solutions for the last assignment. I had suspected they may have copied solutions to the previous assignment as well but was unsure. This time the copying is blatant, word for word from the solutions from a past year. At this point I have no choice but to bring this to the course instructor (who is also my advisor), who I know will report this student for plagiarism. My question is, should I still meet this student and tutor them in other classes? 

A few thoughts that come to mind:


I now know this student is in the course I am TA'ing. I feel tutoring them for this course would be a conflict of interest, and I would have to clear it with my advisor. Is it also a conflict of interest to tutor them for a different course, knowing I will be grading their exam/homework for this one?
I enjoy tutoring because I enjoy helping students learn, and I do like to help people succeed. In our previous session this student seemed interested in actually learning, but clearly has shown that they are willing to blatantly plagiarise homework solutions. While I do rely on my extra tutoring income, it feels unethical to tutor someone who cheats. At the same time, I would like them to be able to understand what they are doing so they don't feel any need to cheat. But this student also said they have not attended class in recent weeks (for what reason I do not know).
If I meet this student again, I will have to tell them that I have reported them for academic dishonesty. This isn't exactly an issue though, they can decide what they want to do from there.
Whether their cheating should impact your role as a tutor is not the primary issue here, so I'll set it aside.

You should not be tutoring a student for additional money when you are also grading that student as a TA, even if the grading and tutoring are for separate courses. That sets up a financial relationship between a grader and a student. That's a big problem.

I certainly don't believe you've done anything unethical here, but you should most likely report the inadvertent conflict and stop tutoring this student immediately (I'd also offer to your superiors that you return any payment for the one session, or just do it yourself anyways). It's not a big deal that you did this accidentally not realizing the connection. It could be a problem if you continued with it now that you know.