Complex sentence: She takes Crispina under her wing, despite Crispina being the longer-serving inmate, and tries to ensure Crispina's safety, although her efforts sometimes unwittingly cause harsh consequences for Crispina.
Split into simpler sentences: She takes Crispina under her wing, despite Crispina being the longer-serving inmate. Margaret tries to ensure Crispina's safety, although her efforts sometimes unwittingly cause harsh consequences for Crispina.