Seal the spring night

Emily is married to Michael for three years and he never comes to her bed. Her cousin is the reason. The two of them have been together the whole time and there is a child. Emily learns it while she is dying, along with the rest of it: the cousin is her own father's daughter by his cousin, her mother was killed by the cousin and the cousin's mother, and the cousin takes the face off her to stand in her place as the legitimate daughter of the house. She wakes up years earlier with all of that still ahead. This time she brings people with her and walks in on the pair of them. She goes after her mother's dowry and the marriage terms her mother set down, and she gets in the way of a faked pregnancy, a swapped identity, and money taken out of disaster relief. A prince takes her side against a princess and the interests standing behind that princess, and there is a marriage agreement to be settled.