I suspect the Crown Prince likes FL.
That's why the Empress really hate FL for no particular reasons if we exclude that assumption.
I meant the 2nd Peince is dead, FL's father exiled from the capital, then she was forced to marry the head of his son's faction to keep her family in check.
It should be logical to stop there.
But it looked like she really wanted to get rid of FL.
There was a time when she wanted McClain's daughter to be the crown princess no matterwhat that's why she need to get rid of FL. Eventhough she is already married.
Did I miss something because I skipped out a lot of parts?

let's me real because they are fictional characters, some authors think it's fucking funny to make the main characters stupid as fuck for no fucking reason. Tell me fucking why did she believed the empress so easily and bro, if every fucking time she meets that 2 face bitch and her father, I think it's pretty obvious they are setting her up. I fucking swear it was pretty obvious that the empress had a hand in her ex-fiancé's death. I also don't trust the crown prince he's fucking sus