The reason most white women voted against Hillary is the same reason most white men voted against Hillary: misogyny. Women are just as misogynistic as men are. Those who think that women can't be misogynists do not understand what misogyny is.
They are happy with their position in life and feel threatened by women who succeed in traditionally male positions. They believe they may have to do the same but they prefer being "taken care of."
This is exactly right. This is why one doesn't see the same sort of solidarity among women as one does among members of other minority groups. Many women are very conflicted about feminism and equality. They accept what patriarchy has taught them about their own inferiority because it gives them a feeling of security.
Many women absolutely hate Hillary but cannot tell you why - or more likely they will not tell you why.
The idea of being lead by a woman makes many women extremely uncomfortable because it challenges their notions of men's and women's roles in society. Rather than admit that they have been held back by society's sexism, they would prefer to think that women are naturally inferior. A woman who is the equal of men in ambition, intelligence, capability, and courage seems completely wrong to them: there must be something unnatural and evil about the woman that she is hiding from them.