That's why I said current situation, the situation has settled into an acceptance from both parties and that's the important thing here, that they're both allowing it to continue, so whatever decision here is based more on that than on how it started.Whether an arrangement is voluntary or not a secondary issue in ethics.
The problem with that is that Yoshida has shown that he's not willing to have that discussion either and she knows how he is. It's clear to see that with him there the conversation would just shut down and that would be it. Maybe even just leaving Sayu to stew in doubt without figuring out anything.Gotou is doing this after seen to it that Yoshida is excluded from the discussion; Gotou is actively seeking to have the decision made by a vulnerable minor and not by the adult who has taken to heart the interests of that minor. An honest effort would have involved Yoshida and Sayu in discussion together.