I'd like to do an arranged marriage roleplay. In the time period of roughly 1200's-1500's, pre-gunpowder. With the Prince on bad terms with his father as an ongoing war turn more brutal, appealing with little result to him to stop the butchery as the small civil war in the country has stop but still the genocide continues. Assuring his might, he arranges a marriage incorporating another powerful country into his own. Following threw with her father's last wishes and marries the prince, but his own father has been eyeing her for his own lustful desires. Coming to be an open friend the prince, the princesses offers a suggestion that is heresy but one he does consider. Killing his own father, something he ways heavily on his mind but must do so quickly before his fathers return.

(My prerequisites are very easy to meet.)
1.) Several paragraphs roughly three.
2.) Help in story development.
3.) Grammar isn't my strong suit, so just as long as I can comprehend it.