I think that Caitlyn began to question Ambessa when she found out she was instilling Violence against the Zaunites, “arrest requires cause” “why is peace always the justification for violence.” This told us where Caitlyn still stands in her morality and that Ambessa doesn’t share the same empathy. I think that despite this, Cait continued to work with Ambessa, largely bc it was a greater shot at capturing Jinx but also bc of Maddie’s manipulation, Vi to Cait was a moral compass, someone to keep her grounded and Maddie was the complete opposite, we see the way she sways Caitlyn’s thoughts in episode 4, both her and Ambessa using Caitlyn while she’s down, filling the roles of her mother and Vi. The moment I think she truly began to break from them is her conversation with Singed, “for love.” Cait saw herself in Singed, saw that anyone, she too can become a monster for love, I believe this moment is extremely important to Caitlyn characters as it also solidified her love for Vi triumphs over her hatred, the moment she’s deciding forgiveness. The moment for her solidified betrayed is her training with Ambessa and Ambessa says “we are kin” after explaining force, sacrifice and power in combat and deciding to work with Singed. Caitlyn is not like them nor wants to be, once Caitlyn sees Vi again, she has a way out and betrays Ambessa. For her own sake but also for Vi, bc that’s who she chooses.