The play is set in a time period when society was defined by strict gender roles. In this story, we are discussing a married couple at this point. She does not want her husband to feel like he does anything to her. This alone implies gender roles, and the separation in the rolls e this alone implies gender roles, and the separation in the roles.
expedition = "a journey or voyage undertaken by a group of people with a particular purpose, especially that of exploration, scientific research, or war" - Google
This definition applies to the context in which "expedition" is used in the sentence.
