From what I’m reading so far Adele doesn’t want to accept his proposal because she’s currently *holding* on to the name ‘karina’ which is not hers, if news were to break out with an engagement between the duke and ‘karina’ Adele would *forever* have to carry the burden and the name of a girl that is not her. Adele wants to be herself, someone who isn’t related to the biftas, but someone who is free and happy away from the abuse that she had to endure during the times in the mansion. Not only with the name problem but how Adele knows that even if she were to escape death once doesn’t mean she can escape the next possible outcome waiting for her after marriage.