The kittens were a catalyst to crumbling the walls of tension that had been built between them.
They could've both gone somewhere else entirely, wherever they wanted to go, without the underworld crumbling or the pain Gabriel was in.
What peace she'd found in the familiar orchard fled as she looked at the charred, crumbling ruins of the once great city that lay beyond the wall.
Notwithstanding the protection afforded by sand-dunes and earthen embankments backed by stones and timber, the Frisian Islands are slowly but surely crumbling away under the persistent attacks of storm and flood, and the old Frisian proverb "de nich will diken mut wiken" (" who will not build dikes must go away") still holds good.
Powers created by worldliness and sin are crumbling, as they well may; "the city of God remaineth!"
How would you define crumbling? Add your definition here.