For revenge? Wtf is she on about? She wouldn't be using her status of "Saintess" for revenge😑. She'd be using it to save her KING... you know, the guy that's far more important to the country than his shitty, murderous son! The prince got rid of the person that made the king's medicine. Besides continually calling the prince a dumbass that makes dumbass decisions, they now have a clear motive for his actions: two birds, one stone. He could get rid of the saintess and the king, simply by banishing her. The only reason she hasn't gone after the prince is because of the writer's forced intervention to ensure she doesn't. Man... who doesn't dislike forced plots😮💨? Luckily, the rest of the story's good enough to look at this as nothing but an annoyance.