Anniebach I do not believe, and did not suggest that a woman - or man - involved in politics should give it up if they marry a more succesful politician. However I do believe they should continue their political life on their own skills and abilities only and not ride on the coat tails of their spouse.
Mrss Cameron, Brown, Blair, Messieurs Thatcher and May, none of them had/have political careers so I see no reason why they should play any part in the political process when their spouse becomes Prime Minister.
Most of them had successful careers of their own before their spouses became PM and I also think they should be able to continue these careers without having to subsume them to a politically successful spouse. This is something that, regrettably several of them, including Mrs Cameron, had to do,