We never actually saw her die (or heard if you don't picture the story as it's being told). What if she wansn't actually being taken away for food, and they through her back in the room after Datu and the others escaped. Maybe she'll survive the blast and be taken back home with Lizzie and Brick (Tardust won't be welcome) to meet Hope (???) and Datu again. I know it's a lot of crazy "if"s and "maybe"s, but I think there has to be a way for Datu to come back out of his slum. Because if Hope is dead, his mental stability is pretty much shot for the rest of the series.