"Tu me prends en photo" is dedicated, as it says on the title page, "To the children whose pictures we take when war has already taken everything from them; to the photographers without whom the rest of the world would be unaware of their existence."
It's all about the relationship between photographer and subject.
The subject has lost everything, and the photographer is powerless to compensate for the slightest loss.
The photographer has nothing more to offer than a testimony to the devastation, like an appeal to the rest of the world.