Complex sentence: Boomer starts to have second thoughts about going against her fellow Eights; however, Cavil, who has developed a relationship with her, encourages her to embrace her true nature as a machine, and abandon her emotions.
Split into simpler sentences: Boomer starts to have second thoughts about going against her fellow Eights. However, Cavil, who has developed a relationship with her, encourages her to embrace her true nature as a machine, and abandon her emotions.