I question if the prince will continue to shun Sei, despite her being the true saintess, or pull a shit-180 and begin to shun the other girl. Causing Sei's jimmies to reach MAXIMUM RUSTLED!
Either way, I can only see the prince as a bit of a tit.
I love this as the way of her exposing herself. Its so classic and wholesome. And it would justify dealing with some trouble because that smile is too good. ?