One sister ran away and the other sister was forced to get married and live her life ...okay fine ..but how come you expect the orginal bride to come back after months and take her place as a wife ... Insane as it sounds but the writer actually wrote this down. Boy !! This is not right even from a fictional perspective.
Anyway! So FL was a fighter ( general) , has good knowledge of medicine , she is witty and there is practically nothing she can't do. But I don't know why this happens as soon as FLs fall for ML they become stupid and so reliable on the ML.
The conspiracies in the story were very Flat they didn't add any excitement to the plot.
Lastly the core problem " omens of the twins" which apparently started as former king's twin brother wanted to kill him, resolved with the crown Princess given birth to twin babies and crown prince can't kill his own child.... THANKYOU FOR THE MERCY

Seriously I would have prefered a different ending.