In thinking about this, maybe all that is lacking is a clear division of responsibilities, you know, boundaries.
Perhaps, he could be the captain 'on deck', essentially sailing the vessel as a single-hander. And she could take charge of cabin life, you know, preparing meals, housekeeping, and other associated
I hear women respond well to such an arrangement, and find it very fulfilling.
...after all, I believe she said that 'she adores him'
Could be a good thing!