Thank you @anouk.nox
I'm still trying to get over the fact that he had her hidden all this time while his grandparents were there too. I just found out that he had her hidden in a closet for months before he moved her to the barn. Which makes me wonder even more. His grandmother was still quite agile and always cleaning the house! So unless he had her upstairs in the apartment where no one ever went, she surely must have smelled something. I don't know. I don't want to suspect anything I'm not sure of, since both his grandparents passed away a few years ago, so I won't even speculate. His grandfather died only a year after this, so that does make me wonder if he knew something and the guilt eventually killed him. He wasn't sick, he just passed away overnight.
And I agree, something good will come for my daughter and her brother. It has to be. For them and their future.