In “The Great Lawsuit,” Margaret Fuller claims that, "Women here are much better situated than men.” What situations is Fuller describing? Which situations did she “wish” women had? What are Fuller's views about marriage? How does she think it should be?

When Fuller writes "Women here are much better situated than men,” she is referring to some of the advantages women in the United States (at least middle- and upper-class women) enjoyed, specifically that they were more confined to the home than men and that they lived in a new country. These advantages (or situations) included more time to read good books, not being thrust early into busy schedules, and being under less pressure to succeed in the world than men. These "situations" offered women more time to think. As Fuller put it:

Good books are allowed with more time to read them. They [women] are not so early forced into the bustle of life, nor so weighed down by demands for outward success.

Being American, women here also had fewer conventions or traditions to restrict them than women in other countries.
Fuller wished, however, that women had the same freedoms as men, including the right to vote. She wanted women to liberate themselves from the idea they should be led and educated by men. She wanted them to pursue truth, not to be complacent, compromising, and helpless:

I would have her free from compromise, from complaisance, from helplessness, because I would have her good enough and strong enough to love one and all beings.

Fuller outlines four types of marriage. The first is the conventional marriage where men and women fulfill their traditional roles in separate spheres. The second is based on mutual love or what she calls "mutual idolatry." The third is an intellectual marriage based on friendship where both partners read together and work on intellectual pursuits, sharing a deep understanding and companionship. The fourth is the "higher grade" of marriage, the "religious," which Fuller pictures as a "pilgrimage towards a common shrine." It includes all the other forms of marriage and is the one Fuller most approves. In such a marriage the partners are equals. The wife is not led by the husband, but both partners esteem each other.
Fuller believed women should have the economic and political freedom to enter into companionate "religious" marriages where they would be equal to their husbands. She wanted women to be allowed to speak and act in public as well to vote and own property after marriage. Her ideas, while common now, were radical in her time period.