What I didn't see articulated is what Mr GradyBunch likes about life aboard... presumably something he hasn't actually done himself... if I am correct.
For many males their boat is like their cave... they don't need much in creature comforts... or certainly less than landlubber style... and love to tinker... bikes, cars, boats and so... Women can be found around stables... but it's not a live style as in you live in a barn with horses!
Also do you envision living aboard
in a marina? Why? To me that sounds like an awful compromise... none of the escape of sailing and being off the grid and all of being cramped into small quarters smelling the stin and hearing the noise
of your neighbors 5 feet away. Nothing romantic about that.
Working a land job and living on a boat seems a chore... worse on a mooring
where you have to "dress for work" and commute to a dock
in a dink on a rainy day no less.
Unless she can satisfy here career itch from some job off the grid so you can ALSO sail and explore and have"fun" as Anne Cate mentions... I think it's not gonna happen. Why should she be deprived of a meaningful career? If she has an active creative mind she will probably become bored.
Maybe you can hook something up for X months at sea and Y months land based... but the job thing will be difficult. Most people seem to want to "escape" to sea and cruising... after they've paid their dues on land... job, kids and so forth... When you don't have something to escape from... perhaps the pull is not as strong???
Young folks do... travel.. back back, hitch around the world while young.. cheap
and dirty and then find a spot and settle down after they sowed their wild oats. I suppose you could upscale this a bit on a boat... But it takes more than a back pack...
Most important is to be on the same page as your partner...