The answer to why women working for women are more stressed is right in your own story:

Women in positions of power are under resourced, not as well networked as male counterparts and cannot protect their employees as well as male bosses.

If your boss is insecure, unable to be protective of your department, its mission, goals or resources, or is not as wired as another mgr in the organization, how would you feel?

Deb Fournier