He freezes for a moment, before letting out a long breath. It's a natural question, but it still takes him a few seconds to get control again so he can answer. He's not sure how much to say, but...

"One of them... didn't make it through a fight. And then I left. I didn't want to get the others hurt if I did something dumb." His throat feels tight - too tight. It still hurts, thinking about her. Thinking about what he should have done differently...