It seems for the most part the husband was the bitcoin and investment expert of the family, they had a nice life and could afford to get more bitcoin, why is she questioning his call when they are doing so well? Does she believe to know better? Why? Probably most of those posting on this thread will agree with his call and his assessment of the market, there is no need to sell bitcoin now and maybe ever when the ceiling seems to be way higher than where we are now.
Simple answer: She wanted out and needed an excuse. Nothing more is needed.