"You are sweet" the words leave your mouth on their own accord, and the longing you hope she could see, it's very true, even if you've just entered the elevator - some things can't be faked, and the fact that they are your family, that you care about them… this is a simple fact, very, very true.
She is almost crying. You hate doing it, hate doing this, but it's the only way, even if you hate making her cry, even if you wanted to be there to keep your promise, and always save her. but you can't. you have to save herself first. And you have to keep the promise you made to two empty bodies first, the shells of what used to be the only ones you truly cared about in your life. You are hurting her, and you hate it. You hate it because she doesn't deserve it. She doesn't deserve you, in any way.
But maybe she deserves it, because, after all, you told her your intentions a long time ago. And you told her some things can't be fixed. You can't be fixed, not yet, at least. One day, though… who knows.
Right now, though, you have to make her suffer, right now, she has to endure the pain. And you already knows: she'll do it on her own.