Board Thread:Speculation House/@comment-3257939-20131111020445/@comment-100.2.60.202-20131120160259

My theory is that maybe Ruby and Yang are both orphans and were adopted by some couple and Ruby or Yang, either one, decided to take the surname of the family. But one of them still felt a connection to their previous dead parents and kept their previous surname.

Either that or thier parents are divorced and Ruby went with her mother, because in Little Red Riding they only speak of the mother. Yang probably stayed with the father.