I'm kind of glad of this cause I don't think she was suitable anyways. It was kind of obvious that this would happen cause the grand Duke wasn't involved enough in the story to be the ml; Rina was in the story so much, that it was certain that she had a lot of importance in this story
I tried to double check the last 2 scanlated pages and the raws. It is the correct order, but the flow of the reaction faces is odd. And as the two readers said below, it is MC who said it and stated it for the first time.