"I was wrong to kill them, even though I was trying to help."

And then he's there , in her space, up close and looking actually angry. "So why didn't you help them before I had to?! Why did you let them all suffer and fear and hurt until all they wanted was to die?! Why didn't anyone save us?!"

And as if he's realised, so close, too dangerous, the terror is back on his face and he's gone in a curl of smoke, briefly visible outside as he flees and then vanishes again.