I honestly don't care if 2 rich people get married across the world. So what, they are married. Kings and Queens literary have no power in their government.
For the most part monarchs are figure heads but lets say, for example, a minister wants to make a new law. That law has to be approved by the monarch for it to be applied, so I wouldn't say they have literally no power.
Representative monarchs are over hyped, I would never want one in the US.
Also, we don't even need a loving figure head with power (hint: the president), just encourages stuffty mass politics.
I'm not saying the US should get one. It's just what the woman said.