The lake water had reduced his mother’s rose-scented powder to a nasty paste, and he threw the whole thing in the trash. The photos stuck together and shredded when he tried to separate them, so they went the way of the powder. Only the compass had survived the outing.
Shows how he absolutely abandoned every piece of his mother and her kindness the same way he abandoned Lucy Gray. The only thing that survived in him was the evil of his father.