I'm voting for Sedin. Honestly he's more handsome than the prince and also, I'm pretty sure the proposal was a calculated move. He now finds her valuable enough so he's probably trying to tie her to him in whatever form, probably thinking she wouldn't break off an engagement with everyone watching her.
But the thing is, the previous Reneé had far too many troubles to even bother fixing how society views her and the current Reneé couldn't care less what others would think of her. It only "works" now because she's more concerned about their plans.