Sometimes you realise that someone else is in charge of your mentee, it can be your boss, wife/husband, friends or family.
When you confront your mentee you have two different possibilities: He or she admits it or they don´t. In either way you as a mentor has a problem.
The best way is to invite the other part to a combined meeting. Then tell or she about the privilege to be a mentee and be in that spotlight, and that the reflection is the most important tool in these sessions. And if someone else correct the mentee after a meeting, everything is destroyed…
They have to step back or the sessions are for no good.