I know this is S&B but why should it matter?
Neither woman is, was or ever will be the First Lady of the UK. We have enough of them in the royal family.
Do we remember how Mrs Major dressed? Or Mr Thatcher?
OK, Winston Churchill’s wife was a famous (American?) socialite and he was a megalomaniac. And Cherie Blair was notorious for all the wrong reasons.
I hope she plays her supportive wife role for a few more days and then fades into obscurity to get on with her own business.