She got every rights to ask for what she wants ....
Its a fair deal all along, gals wants sense of security and provider, male wants a gals beauty and youth ....
Problem starts when ur bargain power are dwindling .....
Women as u age, ur beauty, youth and child bearing capabilities drops. Tits and butt sagging, wrinkling from the neck and face as well, face becomes dry due to loss of collagen
Likewise a guys bargain power are also challenged by their providing power, comfort like house, cars, financial power etc .... aging, balding, bird soft soft

.....
Simply said, if u ask for this and that, so how much can u give in return? Don't tell me love over rules everything .... sooner or later problems will surface.
So both have to know their own limitations and work from there. Its always a compromising give and take, it will not last if u keep giving or keep asking from the other party.