I admit I have never heard Melania Trump speak in public apart from the Michelle Obama repetition, so I have no idea how supportive or otherwise she may be about her husband's weird ideas and plans. I also understand that wives will often remain with and support husbands who are abusive, unfaithful and appalling in all sorts of ways, through fear, through worry about financial difficulties, through insecurity, because they have a child or children or for any number of personal reasons.
I don't think I have ever heard of anyone leaving or divorcing a husband for reasons of political disagreement, particularly when they have a very comfortable life – or is that a rather nasty comment?