With many of her crew dead and the destruction of the Twelve Colonies confirmed, she holds a speech vowing to take revenge on the Cylons. However, in a private dinner with her XO Jurgen Belzen, Jack Fisk, Inviere and Shaw, she promises that she has no intention to unnecessarily waste lives or resources in an emotional quest for revenge.
Shortly later, a Cylon communications relay is detected, which the crew believes to be an easy target. On arrival however, it turns out the target is a Cylon staging area, filled with 15 squadrons of Raiders. Belzen urges Cain to recover their Vipers and retreat, but instead she seemingly forgets her earlier promise and orders the launch of all remaining fighters, which Belzen refuses to do in the face of such odds. Cain asks the XO for his side arm, and shoots him in the head in front of the crew. She then turned to Fisk and orders him to launch the Vipers, which he does. At the same time, Inviere allows a group of Cylon Centurions to board the ship, causing many deaths. Shaw reveals her as a Cylon agent in CIC and Cain orders her arrest. Pegasus manages to win the battle, but with staggering losses.