Trapped on board the Earth ship "Prometheus" in season 7's "Grace", Carter realizes that her feelings for O'Neill stop her from exploring other romances. Two episodes later in Chimera, Carter begins dating her brother's friend Pete Shanahan, but finds it hard not to disclose her job to him. In the season 8 premiere, "New Order", Carter gets captured by a humanoid Replicator named Fifth she had first encountered in season 6's "Unnatural Selection". Fifth eventually releases her, but keeps a replicator copy of her, known commonly as 'RepliCarter'. Upon O'Neill's promotion to brigadier general in the same episode, he promotes her to lieutenant colonel. Carter assumes command of the SG-1 team, which includes the de-ascended Daniel Jackson, the alien Teal'c, and herself. Shortly after the death of her father in late season 8, Carter breaks up with Pete and goes fishing with Jack, Daniel and Teal'c to celebrate the defeat of the System Lords.