@stormdragon I hear you. But if she were truly afraid to stop living as Karina, if she was truly terrified, she would just run away and end their arrangement. Currently she is still living in the mansion and is still in the same situation as her previous life. So she’s not really adapting as a character. Sure she’s shown a little more backbone than before but nothing that has saved her from her previous end.
Even if she decides to take a chance with the engagement, she isn’t really worse off. Because she doesn’t exactly know how it would end, whereas right now, she definitely knows how it will end with her family. If her fears about living as Karina as a barrier, she could just explain the situation to him beforehand and see if he’s willing to carry through. If he doesn’t believe it or doesn’t want to, she’s not in a bad position because he’s a cursed duke and no one really associates with him anyway (so the chances of him outing her as slim). For me, I can just see more reason to justify the engagement than to refuse it. But you make really good points for me to think about