Nuts.  None of them knew.  She'd have to ask Lady Miki about it.  "Well, then maybe it's just something that we don't know about her."  As for being her sister...  "Lady Miki and I were separated at a young age.  I was given to a master of my art, to learn and train and do everything that I'll do here.  Lady Miki...I don't know what happened to her.  She is technically my sister, but..."