"You know, Steve, I'm not actually interested in having an argument with you about James," she said, and her voice stayed at that calm, even register she could keep it at. The kind of register that could mean a thousand different things; it could mean she really did feel entirely neutral on the subject, that he was desperately hurt, that she was furiously angry, that she was amused and didn't feel like letting someone know they'd succeeded in amusing her. That was a voice that concealed everything. It was not, generally, a voice that she used with someone else who had called themselves an Avenger, but it felt right for this.
"I'm not interested in having an argument with you about James because you've already made up your mind, and if nothing else, I do know how you get, once you've made up your mind. I'm never going to convince you otherwise if the only way you want to look at this is that you were wronged." She smoothed out the bottom of the shirt with her hands, and when she met his eyes, there was no anger in hers, there was nothing that matched his bite or the tension in his jaw.
This was not a fight. This was a statement of facts. "And none of that matters to me, either. Do you know what does matter to me? I told you that I died. It wasn't an easy death, I don't think I added that part. I hung on for a couple seconds after I hit the ground. Probably not many, but enough that I had a few to process what was happening to my body. I came to you here, and I told you that there's a world out there where I'm dead. Tony figures out how to send us all home from here one day, odds are that's the place I'm going back to. Some planet a million miles from home, where my body is rotting on the ground like a piece of garbage no one's coming to collect. What matters to me is that when you found out that James loved me, none of that mattered to you."
It was steady. It was a recitation of facts. "Ten years ago, for me, in Leipzig, I watched you tear the team apart for him. Break the law. Go on the run. Burn down the world. I understood, you know. I always understood. Please do not stand in my home right now and tell me that you've stayed away now because you were trying to protect me from your own anger and hurt. You've stayed away because ultimately, I am not someone who matters. I'm not going to argue with you about it."