I say yeah. And your punishment for the "very demanding jobs" BS is to mow your lawn with a pair of cuticle scissors. Living in suburbs = mowing lawns. New excuse: "I didn't know these American mores because I did very demanding studies and never watched TV or went to the movies."
I say: does she benefit financially from this farm? If so she should do something. If it's not hay hauling, let her find something else. Her husband knew he didn't marry a jock, so he should support her on this.