I'm sure I can tell you that Yuenu is crazy, because she can see it from many things, such as being easily emotional and lacking experience in getting along with others. For example, Yuenv could have put forward the method in another way in the play. Yuenv could have done it more tactfully, but none of them proved that Yuenv was really crazy. However, according to these clues, Yuenv may have been fake crazy before, but once a person is regarded as crazy for a long time, even if it is fake crazy, it will be really crazy later. It is estimated that Yuenv used to be a very clever girl, but because her thinking was different from that of most people, and it was ancient times, there was no way to understand that she had never heard that genius and madness were just an ideological difference, so the ancients might think that she was crazy, but after a long period of neglect, Yuenv was already crazy when she appeared in the play. I hope my answer can help you solve your doubts ~ ~