Good. [he untenses the tiniest bit, still clinging to her hand] You won't-- You won't have to hurt anyone anymore, Euphie.
[the geass isn't compelling her right now. she obviously remembers what happened, and that's not ideal, but... there's just no way to get around that. if he could, he would take those memories and seal them far away. seeing her like this, that horror and guilt in her eyes, brings back the nightmare of it all for him, too. more than just some massacre -- the personal tragedy, her tragedy, that she can't even see. someone bright and good compelled to destroy everything she believed in, compromise every principle she had]
[but all he can do is regret. and there is so, so much of that]
It's over. [Cross's spell might not be the end, but he's going to make sure that it does end before it can hurt her any further]