Another thing to consider: is Adeline really having discussions with the stranger, or are they imaginary? Given that Adeline, at the novel’s present, has been alive for over 300 years, it’s clear that the world of the novel is one where supernatural or fantastical forces exist, so it’s not unreasonable to figure that Adeline really is talking to the stranger. Finally, this section underscores how determined Addie is to have a more exciting, independent life: she’d “
give anything” to see the world—even, perhaps, her soul.