Ok, so... in her eyes, the asshole "leader" of her team is only there to advertise her skills and as a steplader to her goal, but she is perfectly aware how bad he is and is willing to publicly say so. Probably knew that from the start, before joining the team (and if not would have learned quickly after some missions with them, since it seems that save for the also-new cloaked one they put all the work on the back of the one they traded for her).
Meaning that, unlike our protagonists, she had no need or desire for his friendship or gratitude, and even the money is secondary.
...
Hope she becomes friendly after this and comes back from time to time. Her personality and mindset seems to be a nice contrast to the main cast's.