The feminine's moods and opinions are like weather patterns. They are constantly changing, severe and gentle, and they have no single source.
No analysis will work. There is no linear chain of cause and effect that can lead to the kernel of the "problem."
There is no problem, only a storm, a breeze, a sudden change in weather. And the bases of these storms are the high and low pressure systems of love.
When a woman feels love flowing deeply, her mood can instantly evaporate into joy, regardless of the supposed reason for the mood.