She learns skills, is protected from men, and can even strive for a vision. Virgins were essential to the Sun Dance, cutting down the sacred tree. Marriage the crucial change. Wife goes to live with husband's band or group, but only as long as he can support her. Men do share in camp work when possible, but their first duty is protection.
Women care for the children.
This makes sense as children around camp. Grandfathers and grandmothers were thus central to the preservation of the Lakota society, the repositors of culture.