Old lady communications system

This photo of a 100 year old semi-blind old lady communicating with a relative by touch could be wrongly interpreted.

The way they communicate with each other is, he touches her hands with his face, and in this way she knows that it is him.
He is her grandson – in fact she has several grandsons. But for some reason she knows that it is him – that it is this grandson, despite the fact that in theory it could be any one of her grandsons.
His expression could perhaps be interpreted as cunning, but in reality, he isn’t being cunning at all.
There are a couple of things that might give this impression. One is, the angle of his face in relation to the old lady’s face. He has had to lower his face to her hands, so that he can communicate with her.
Simultaneously, he feels that it is necessary to look up at her face. Or rather, try to look up at her face.
He can’t do this, it’s physically impossible. He can’t touch her hands with his face and simultaneously raise his face to her face.
So he raises his eyes to her face, instead, and this is what makes him seem cunning.