The Knight isn't quite thinking about it, beyond reassuring Siblings that might no longer need reassurance. They go to the Soul Sanctum as it's in their mind, a part of what's bothering them, and they tend to kill things that bother them.

When confronted with the sight of the windows and walls they'd torn out, they stop short.

There's nothing alive here. Mistakes and Follies are sludge on the floor and spattered across walls. Bodies of Soul Twisters are near-indistinguishable from the piles of the City's people they reaped from.

If nothing else, it distracts them from considering what it means to be 'Strongest Sibling'.

They creep across the ruined floor to peer down through jagged teeth of broken window-frame.