Board Thread:General Discussion/@comment-90.230.100.22-20140727004609/@comment-112.209.254.59-20140817101741

Either way, her name in SAO should still be Lux guys. Because when characters import their avatars from another game, they keep the name intact. This has been shown two times by Kirito. He was not given a prompt to change his name when he first transferred to ALO, and it wasn't an option given again when he transferred to GGO. All of his other SAO acquaintances and Sinon when she transferred to ALO are also good examples.

My personal theory here would be that or she was a member of the front lines who prompted to join Laughing Coffin undercover as an informant with her friend Rossa. When this was discovered by true LC members and they tried to escape, Rossa shielded her and was killed, then Kirito came to her rescue. This may also explain why she idolized him. But then, that's just what I personally think. :)