Dovid, it means that the wife focuses on respect to the husband, while the husband now will show the respect.
Pischei Teshuva in YD 240:24 mentions that.
Also 240:17 also is a little careful – he does not simply say that a married woman is not obligated. It is – she is obligated same as the son, while married she is not able to show kavod because of obligation to the husband, and obligated if widowed or divorced. I wonder whether the main limitation is physicial – it is impossible to be in two places at once. But in our days of airplanes and instant comms, probably the daughter could at least answer whatsapp messages from her mother to make her feel better.