One of a woman's biggest hobbies is shopping. For some reason, aquiring shit that they do not need makes women feel better. If they try to deny this, ask them why they go shopping most often while angry or depressed. Now, let's talk about emotions. That is another piece of the woman code that they just can not help.
Women are always the first to cry at a sad movie or flip out about bad news.
This is the nurturing side of them showing. If you have ever seen an animal documentary you know that all female mammals will bite the hell out of anything that poses a threat to their children. So, it is obvious that the nurturing side can go both ways. Humans, being complex, have evolved this emotional vengefulness to apply to other situations in which the woman feels threatened. The nasty bitchiness is her defense system.