Addie's staying with Moses at the end = Positive?
The aunt seemed to love Addie; she seemed very loving when Addie showed up at her home. They seem to be wealthy. They also have a daughter (i.e. Addie's cousin) who can give her companionship.
With Moses, she will be on the road. She will engage in dishonest acts, conning people for money. Is this environment really preferable? You can make the case that she is better off with the aunt