"...right from the start. I should have told him everything... He's a fundamentally heroic person, right? There was no reason for us to be at odds, until I gave him a reason... Feels weird to be figuring all this out after I'm dead."

Instead of some time he could've done something about it.

Sabine's apartment is thoroughly warded against the more unpleasant aspects of existing in Hell. The view of suffering sinners is a feature; acid clouds drifting in wouldn't be, let alone a Hellwasp swarm.

Some things, though, you can't ward against. Or you don't, because they just don't happen.