But you haven't shown us that. We react to what is shown in the comic.
Besides, there's nothing wrong with one-dimensional villains, in moderation. Michael Myers was very one-notethe first Halloween picture and was all the scarier because of it. If written well, such a villain can be frightening because he is so inomprehensible, because we can't get inside his head and see what's going on.
What if she had to choose? Either escape alone or live with her sister in a hellhole? Life does not alway offer the best solution.