Here is it, Charles! Be an agent of change and maybe the one connection Marie-Joseph has left in that family. For sure it's better to by psycho's only friend than an enemy of one.
EDIT:
That connection and parallel between the grandma and Marie-Joseph is great. What a way to connect them. On one hand, Marie brings shame, on the other, she's an inspiration. Something tells me, that whatever becomes of Sansons' reputation after this spectacle, granny will take care of Marie and look at her favourably.