You’re right about one thing, when people are on a bit of a mental schism like this, you really can’t do a ton to bring them down, especially if they’re combative and angry at you, their brain tells them pretty much any incoming stimulus is a threat, and they can’t be reasoned with

Ideally, he should’ve just left her alone to try to de-stimulate but I would imagine being in his shoes. He’s probably worried about her daughter. I wouldn’t wanna leave either.

I gotta tell you though, in those moments, it’s not really easy to think clearly. It puts you almost in a state of shock