Truthfully Stiles didn't really want to talk about it either. Watching it had been incredibly surreal because it had all actually happened to him. To Scott. To Derek. To all of them. The idea that anyone in this universe could watch it, could take some kind of sick enjoyment out of the terrible things they'd all been through...it was upsetting to say the least.
The fact that Derek knew exactly what was bothering him might have unsettled him under other circumstances, but here, in this universe, those of them who were from Beacon Hills needed to stick together. Especially considering they were facing an apocalypse. He drew in a breath as he considered the older man's words, nodding and looking down for a moment.
"I wouldn't change it," he said, voice quiet. "We did what we had to do." And he would deal with the consequences. He was just afraid of how it might affect the others. "But it's not about what's happening at home." He hesitated. "I feel it." He looked back up at Derek. "And what if I can't fight it? I don't want to hurt anyone."