Just a thought
She is the number one master in the martial arts world. She relies solely on her own skills to heal people. She is a master of rejuvenation, but she cannot heal her own heart.
He, the most despised son of the martial arts leader, but in order to save his mother who was not his, he and his favored brother became a bargaining chip between her and her father.
One can be the apprentice who will inherit her reputation in the future, but the other can only become a despised medicine man.
All because of her one thought