The Duke fully realized that "That thing" isn't his daughter Yvonne, as a father, he was helpless and lacking as a result he lost both of his daughters. Yvonne's first assumed death was when they lost her, And when the Duke found out that something was occupying his long lost daughter's body, he had to accept Yvonne's second death. The third and final time the duke had to accept Yvonne's death physically was when Penelope brought him the news that she had to kill Yvonne and it was unavoidable, since her body had already merged with that thing.
After bringing the news to the duke, Duke had to lose Penelope again too. Since Penelope announced she will leave.
Penelope actually meets the real Yvonne and she delivered Yvonne's message to her family who was waiting for her. Real Yvonne hadn't grown up, she was still just a child at the moment of her supposed death.
The Duke fully realized that "That thing" isn't his daughter Yvonne, as a father, he was helpless and lacking as a result he lost both of his daughters. Yvonne's first assumed death was when they lost her, And when the Duke found out that something was occupying his long lost daughter's body, he had to accept Yvonne's second death. The third and final time the duke had to accept Yvonne's death physically was when Penelope brought him the news that she had to kill Yvonne and it was unavoidable, since her body had already merged with that thing.
After bringing the news to the duke, Duke had to lose Penelope again too. Since Penelope announced she will leave.
Penelope actually meets the real Yvonne and she delivered Yvonne's message to her family who was waiting for her. Real Yvonne hadn't grown up, she was still just a child at the moment of her supposed death.