It's a troubling circumstance. She's actually still angry, but also, you can't really blame the king for wanting to do what's best for his country and this world has been very kind to her for the most part. The kidnapping is still wrong, but sorta inevitable when it comes to summoning. If kidnapping a foreign person is what it takes to save a country, any ruler would do it.
It's just that stupid first prince for the most part.