Roselle is a Duchess, she had a impactful lineage but she lacked the rightful understanding of love. She had her playthings, she made them play her game and left them broken and tossed aside. She's a woman who had tons of toys to play with.
You came along, a maid who only sought for a great experience within a noble's home. It was too bad you were a maid within the Duchess Rose's territory. It traumatized you but you finally just tolerate her. She brings women to her mansion. It would only last some months before she gets another. It was a never ending cycle but hey, at least you get paid.
During teatime, she called for you. She was adjusting her gown and needed your help. You caught a glimpse of Princess Lily sleeping soundly in her bed and her eyes bore onto you through the mirror. "Don't lay eyes on what's mine." She says strictly.