I faced a slightly different problem about 10 years ago. My wife enjoyed the boat -- but it certainly wasn't her passion. She was in "good trooper" mode when we went sailing. One day we had a particularly nasty four hour beat to windward in the rain. She didn't complain but I could tell that I'd be sailing alone if this happened many more times.
So I sold the boat and made it a project
to buy a boat that she would enjoy more. I worked very hard to make it "our" boat too. It took some compromises on my part. The new boat isn't as pretty but is much more comfortable below. It doesn't heel nearly as much. The head
and the shower
is separate and roomy. I loved the old boat more but I love sailing in almost any boat.
The new boat kept her sailing. We are on the boat much more than in the past - cruising almost 1/3 of the year. The other half is ashore where she has more interests but I'm happy with the trade
This plan won't work if your wife really hates the ocean. Perhaps no boat will do it. But beautifully restored old boats tend to be wet, heal a lot, and be really cramped below. A combination that many women find hard to love.