Board Thread:Speculation House/@comment-27603392-20130223042647/@comment-6500074-20130228084541

I have my own theory - she used to be something like that metal armor knight thing, powerful, strong, uncontrollable, but something changed her and left the weakened Weiss behind. "Mirror, tell me something" is her questioning the 'past' her. "Who's the lonliest of all?" seems to be herself trying to figure out what's wrong. "Fear of / what's inside me" is the actual 'beast' that she might have once been. "Tell me can a heart be turned to stone" is asking how the 'beast' version of herself could have done what it did once before. "Mirror mirror what's behind you / Save me from the things I see" is referring to her past and the events that occured that led her to today, too ugly and chaotic for the rest of the world to see: "I can keep it from the world" but she is unable to forget "why won't you let me [now] hide from me [beast]". Her final question is answered by herself, in which she understands that without her former self, she is lonely because she is not complete.

Her past might have been a powerful magician/witch, and after getting hurt badly (thus leading to the scar) she sealed her powers. Getting hit by the knight may have awakened her past self, leading to a sudden burst in strength - but ending with herself disappointed or sad that she had broken the seal.