Here is Roberta’s response:
Rosella does not marry Edgar at the end of KQ7. She was going to go on another ‘adventure’ at another time. I do not know if Rosella was ever going to marry Edgar or not. When a story is written, very often the characters ‘write themselves.’ Until the story is written, oftentimes, I don’t exactly know how the story will end. The story of Rosella and Edgar marrying has never been written. Who knows…maybe, someday, someone will write that story.
Roberta