Raeliana ended up at the Duke's likely due to a combination of factors. Maybe there was a powerful force at play, or she was drawn there by a quest for something. The complex web of the story's plotlines could be the reason.
Perhaps Raeliana ended up at the Duke's Mansion because of a prior connection or a promise she made. It might also be that she was lured there by a mystery that needed solving.
Raeliana ended up at the Duke's in the novel possibly because of a combination of factors. It could be a family connection, a quest for safety, or even a hidden agenda. The story's intricacies likely reveal the full explanation.