is the lady in the attic really crazy?

the problem is:is the lady in the attic really crazy? we are not sure of the answer.the first time I read this book I thought the lady in the attic was really crazy,not only me but also Mu Xin thought like that way. but now I have to think about this question:is the lady in the attic really crazy?or…just Rochester wanted others to think the lady was crazy? many feminists think Rochester means men,and the lady means women.