If they have money, perhaps, otherwise, why do you think they have the choice.There are few real monarchies left. Belgium, Luxembourg, Spain are the only Catholic Monarchies and there is no one there for her to marry.
Very, very inaccurate. There are five Catholic Houses reigning in Europe: Spain, Belgium, Monaco, Luxembourg, Liechtenstein. And in many of those Houses there are young and single Princes who can marry a beautiful young woman like Princess Amélia.
You can check it using the Gotha Online:
An Online Gotha
The rest of the titles exist because of the kindness of the nation or the imagination of the bearer.
Princess Amélia, and any other Brazilian Dynast can marry anyone from a former- reigning Houses.
For the Royals, once you are a Royal, you are always a Royal.
And those former-reigning Houses are still very attached with their countries and peoples. Perhaps that's alway the Governments in Portugal, Romania, Brazil, Serbia and many other countries are always asking their Royals to represent the country.
Again, Countess, you have to research better.
You are so eager to say nasty things about the Royals you know nothing about that you always end up saying inaccurate and stupid things.