Responses
Yea i suspect that when she meets the emperor on her wedding or engagement party she will realise that the 'red eyes' meant him since he can control the curse too. (When he tapped the Grand Dukes hand and his pain worsened) She only met him once so far as a child and her head was down the whole time so she probably has no idea BUT doesn't Jin also have red eyes....
Anyone remember how she decipher the tombstone and it said “beware of the red eyes fairies or something”. So the emperor has red eyes, but the crown prince has blue eyes (altho he could’ve gotten it from his mom). I’m speculating that the red eyes fairy took over the emperor’s mind or body. Just a crazy theory