The need may override Kol Kevudah Bas Melech Penima, but that ideal is still compromised when she goes to work outside the home.
In the family of the Kohen Gadol, where Kol Kevudah Bas Melech Penima is essential, the community makes sure the wife never has to go to work or wash clothes in public. If she needs to look at the moon and get her inspiration, she will have a back yard with a high fence, and the money to buy a fine telescope if she wants.