[Even if the memories were false, the feelings that they created were real. That much she had learned in Castle Oblivion, and that was the real cruelty behind what she'd done. Because even knowing those memories were false, Roxas was still burdened with what they'd made him feel.]

I know. I'm sorry.

[Not quite able to meet his gaze now, she looks down.]

Though I guess that doesn't explain very much.