[Mephisto allows himself to entertain the thought of Riley being herself. He already knows that this place has brought out the worst in others, even as it seems to be dragging out the best of him. As much as he liked to think that he knew Riley, as long as the menace of this place was held over them, he doubts he'll be able to see anything.

All the more reason to get her out.]

I look forward to meeting her, then. To seeing you truly shine.

[That... brings a thought to his mind. Whatever smile he'd been working toward is quickly dashed away.]

If I may be so forward... It sounds like you have had very few people willing to take you under their wing. That seems... unfair.

[Tl;dr, your parents suck Riley and he'll die mad about it.]