Board Thread:Naruto Discussions/@comment-3568954-20141202074351/@comment-26112212-20141202083015

Yes It may be possible that she knew this was going to happen so she created the Zetsu army to fight the impending doom and Toneri in future. But how did the clan knew this was what Kaguya was planning and they wanted to destroy her. Although it can happen, my theory is that Kaguya had lost her loved ones because of her clan then she wanted to avenge by eating chakra fruit and turning weapon against her own clan and so she wanted Zetsu army to fight them.