Sentence:  Everything a living animal could do to destroy and to desecrate bed and walls had been done. [...]  A canister of flour from the kitchen had been thrown at the looking-glass and lay like <WSD>trampled</WSD> snow over the remains of a decent blue suit with the lining ripped out which lay on top of the ruin of a plastic wardrobe. 
Meaning of the word marked with <WSD> tags:  To crush something by walking on it.