Camilla is a true example of:
a) Putting up with a rabid rabid press that was also fed by her rival, not to mention a truly embarassing phone hacking situation. And we aren't talking since marriage or the divorce, like since the 1970s. They've calmed down with regards to her because she didn't give them any more reason to harass her because:
b) She kept her head down, was sensitive to the people's feelings about the situation, position and title, and does her job with grace and humor. I can imagine when Charles is crowned it will be she who pushes for the Princess Consort title (yes I know it doesn't exist but hell why not, since titles are all over the place now) or some other title to avoid the whole Queen title issue. And:
c) She has made the position work for her. We don't really see a lot of her family, but she quietly goes and does her thing with them. She does appearances but still has her quiet space away from the circus. She has her charity focuses and initiatives but also shows up to support Charles. Had it not been for some truly outdated thinking about virginity, there may not have been a 40 year speed bump of insanity in the BRF. Well, maybe something else would have happened, but the repercussions of all that continue.
The Windsor men all seem like they need a lady of iron marshmallow consistency beside them to sort out the soft power stuff. The Windsor ladies have it in spades already