I'm not going to tell a friend they got the answer wrong on a study guide
Why wouldn't you tell your friend about their error?
Because I'm a personal tutor not a teacher.
If the problem isn't on a test and you can help your friend out, you probably should. It seems strange to let them put down a wrong answer on a study question when you have the right answer. You should consider helping you friend.
It's my job to not help incoming students out, the other teachers are responsible for answering questions.  Not the tutors, we only guide the students.
I beg to differ. Tutors can give answers at any time they want to, this way the students have a good idea what they did wrong or right. It is about time you see it in that way in order to properly tutor others.