Author is backing out yet again with the Incest suuure. but we're not forgetting the part that Rea and Her Sister are in an incestual relationship. smh author.
anyways its interesting that a princess like her doesnt obsess over authority. she could still use the excuse that she owns Reito now because she's half married to him. (although theres no reason why they stopped after the consummation period. they couldve started to get married for real but she delayed it for some reason?) She could actually be a villain but I guess considering the chapter number, its not in the cards.