Kaden pressed his lips together very hard. Even the anger he'd felt toward Cathal couldn't compete with the shame, now. He nodded, stiffly, and it took him a long and painful (physically painful in his tight tight chest) moment to be able to mutter. "m'sorry."
He knew how bad a broken window could get. Sure, it'd mean something different in Burlington than it meant in the Hole, but still... no matter how destructive he'd felt back home, he'd always stopped himself going for windows. Windows kept the world out. They were important.