We see Morgan as a little girl, losing her father, then taken away with her sister by the nurse to be kept safe and raised in magic. She does fall in love, but her lover is destroyed, even though she tries to protect him, which makes her bitter. Plus we learn why she has no love for her half brother Arthur.
This was great - both seeing some of the well known characters from King Arthur's story from a different angle, plus an explanation of some of the magic behind the stories. I think I want to read the I am Mordred story too.