[That'd maybe be more believable if Adora hadn't just said She-Ra isn't invincible, and even then, Catra wouldn't be amenable to abandoning her. She'd just use Adora as a shield or something instead.

And how dare Adora tell her to do something that she was going to do anyway??? And just dismiss the conversation like that, like Catra hadn't already decided it was over???

She scoffs in disgust, clenching Adora's belt in her fist and resting it on her hip.]

I was about to, before you went and got all dramatic on me. [So don't act like it's your idea, Adora!! Catra thought of it way before you did! And now that she's been told to do it, she's not going to at all.] What's it matter now anyway? Have you seen any rebels hiding out around here?