Misogynistic?

The women in One Flew Over the Cuckoo’s Nest by Ken Kesey are either uptight and prude or utterly loose, except one. The one nurse who works in Disturbed seemed to be an accurate representation of a woman. She was motherly toward and worried about the patients. She apologized for the sting when cleaning the wounds McMurphy and the Chief sustained during the fight against the black boys. This nurse was a kind, loving character. To fit the theme of misogyny that is supposedly apparent throughout the novel, would not this young nurse be described differently, probably grouping her into one of the two categories above? Have people judged this novel too quickly, deeming it misogynistic, without looking at the finer details?