I suppose your right, naive and ditzy are very similar words with ditzy having a more negative connotation. I just thought people might be jumping to conclusions about her character without knowing the fully story of what happened.
After re-watching the scene I saw Oola holding a noticeable amount of slack from her chain as well. I think this might be the same length of chain she was holding while she was dancing. You might be right though, it could just be a continuity error from the film. Not really sure.