Women played a variety of roles during this decade, but the most common roles were the traditional roles of wife and mother.
It is true that these roles decayed to some extent in the Depression. Fewer people got married and more people who were married chose not to have children. In addition, many women started to work for the government, with women making up 19% of all government employees by the end of the decade.
However, women were still mainly playing their traditional roles. In some ways, these roles were strengthened. For example, things that women did to economize, like cutting adult clothes down to fit children, were more important to families that were short on money. With more stress for most people, it was more important for women to keep families stable through their traditional roles.