The princess also hates

When she woke up, she became a little widow, a woman.
The new master is her husband, which is ridiculous. He is the younger brother of a dead man. How can he marry his sister-in-law? It turns out that this is the rule here.
She is not a woman here. How can she obey her orders? Unexpectedly, a decree married another state. For the friendship between the two countries, she became a victim.
What kind of drama will be staged, what is another woman, and what kind of drama will she do?
What is infatuation? What is hate?