Board Thread:General Discussion/@comment-11398218-20140521105018/@comment-25801533-20150610024230

She was adopted into the Kuchiki clan 40 years prior to the start of the series. It was after that that she was put in squad 13, and then some time later Kaien was killed. Ganju appeared to be a child when she took the body of Kaien back to the Shiba clan, but looks like he is in his late 20's by the soul society arc.