[...That was something she hadn't heard from either Steve or Thor. She'd thought Loki had survived the Battle of New York and had returned to Asgard as a prisoner - supposedly for life. If he'd been executed, Thor would have been acting very differently - unless he didn't know, of course. Suddenly, Peggy found herself cursing the lack of people from the future for an entirely different reason.]

I'm sorry to hear that. Then again, if you brought me over from a time when I was alive, I'm certain we could work something out.

Unlike you and Steve, apparently. You could at least try not to goad him to anger over it. If it came down to a fight, I'm afraid I'd have to take his side.