Instead of earning their freedom Susanna, James, Polly and Captive are thrown in jail. Miriam, as a dressmaker for a notable family, is spared jail time.
Susanna, James, Polly, and Captive were not granted freedom; instead, they were sent to prison.  Miriam, on the other hand, was spared imprisonment due to her role as a dressmaker for a wealthy family.