Actually a good outcome

I think that Carcel is taking contraception is actually a good thing. If he didn't, Ines would have already gotten pregnant. And we all know what plans she made for after the pregnancy. Especially, after getting pregnant, she would have cut off the contact to him to the bare minimum. And since pregnancy takes a toll on woman body + mind depending on what symptoms they have, she would have sunken deeper into her "stay to the plan" bubble. She would have NEVER opened up to Carcel like she is doing right now. And if they soon go hunting and riding, I can already see that she will open up more and will be reminded of her first life where all was "still good". So her new life right now will get the nuance of "everything is going to bee good now". And that's all what we want