Her ending up with Doheon would be the worst ending. Think about it. His existence already humiliates her. Even though she’s the rightful heir her father chose him over her. I’d be one thing for everyone to know she’s a half breed, because then they’d all understand why she wasn’t chosen to lead but because they don’t it’s as if he’s basically confirmed that he doesn’t consider her fit to lead. Honestly I’m surprised by how mature she is when it came to Doheon being officially announced as the successor. She had every right to be pissed. To be with the man who stole her birthright would be a humiliation. She’s already witnessed how out of the loop she is. Would she really be able to handle people’s comments about her. I just don’t see it.
AGREEDDD. She has a huge inferiority complex towards him, it would really become and unhealthy relationship where she keeps hidden resentment towards him. Plus I feel like ppl keep forgetting that they were literally raised to be siblings. Her dad considers him as his son, and she considers him as her brother, that’s the whole reason why he’s in that household, to be the heir, basically an adoptive son.
I think ppl just like unrequited loves/pitiful men lmao
The sibling dynamic isn’t really a whole issue to me. They both know they aren’t real siblings and the father seems to like the idea of Doheon proposing to her. But yeah the resentment would continue to build up until at some point she snaps. It just would be too unstable of a relationship like you said

Ugh, I really wish she'd end up with Doheon, he's like the elite choice but this blonde is also good, in a different way, sigh, tho personally, I like doheon more