Marianne, their mother, was killed and Nunnally was seriously injured. That's why she can't walk and why she was blind for years. Lelouch was so angry. He confronted our father.
[Reserved] It...did not go well.
[She gazes out over the water rather than looking at Lockon. It was so long ago, but thinking about it still hurt.] They were sent away, and later we were told they died.