That there is a brother involved... it both helps and does not help her understand. After all, less than a year ago she still had a brother, and she was herself the one who ultimately changed that. She tells herself that he deserved it. And comforts herself with the fact that he begged her to do it.

"...There was no assassination attempt, then." She speaks slowly, carefully.

Things would have been very different, had Pyotr been linked to her thus; her relationship with the Huntress is a closer model.

"And you will not heal, unless he is healed." It doesn't mean she fully understands, not quite, but this is one piece of information she wants to pin down.