Plot summary
During her evaluation, McNally confides in Best about her fears of ruining her life because of the job. It is revealed in her most recent shift, McNally had informed a mother of her daughter's death. The shock of the news and the realization of the part she played in her daughter's death drives the mother to try and commit suicide until Williams intervenes preventing her death. The pain that McNally felt she caused mirrored that of one of her father's cases ( To Serve or Protect ). Best tells McNally to bury her father's skeletons and make a fresh start. All the rookies pass their evaluation and become fully fledged officers.
Credits
Adapted from Wikipedia contributors, Rookie Blue season 1. HTML formatting and reference markers removed.