There were different gender expectations of men and women in the late 18th century.
Region makes a big difference.
In the New England, where you didn't have really enormous plantations, women are much less likely to be used as field labor. In New England women are more likely to have been cooks, maids, household servants, working in the vegetable gardens and the medicinal herbal gardens. They're growing thyme and sage. They're growing the vegetables that people are using. They're doing food processing at this time.