Board Thread:Naruto Discussions/@comment-25051328-20140611195141/@comment-26302001-20140615120418

Her flashback panel of Hagoromo in chapter 680 seems to hint it was him who ended her reign and most likely killed/sealed her and it had to be after he became the Jinchuriki because he had the truth seeking orbs and the staff made from them,so maybe she was stronger than him and Hamura before Hagoromo became the Juubi Jinchuriki but most likely she was not after he did.