I have a relative who is in recovery, so I understand the fear and embarrassment. However, it is clear that Erin is savvy and good at improvising. Castile and Valentine needed to pull Maggie from the operation. And the idea of her going in Erin's place? The actresses don't look anything alike. That would have endangered the hostage. Her not wanting Erin to return to New York was selfish. Her sister is an adult and willing to take responsibility for herself. Maggie needs to let her live her life and stop seeing Erin as an extension of Maggie. And since when is Indianapolis without crime, drugs, and the rest of the temptations of American life?