So glad that was a fun bit of writing for you too, and yes, Ethan completely had it coming.
I have to admit, I'm at a loss though, how to make this any more about Ethan than this already is? What Bree is saying right now, aren't just insults to pop off, like when two friends/lovers are angry with each other trying to hurl the most hurtful thing they can think of. Yes, she's pissed, but not because Ethan "hurt her feelings." She is furious and terrified for the life of a little boy, and stunned that his moral compass is [apparently] so stunted, he can't see this.
This is her honest assessment of Ethan to date, not a fit of pique because he left the toilet seat up again. Bree doesn't know that he saved her life the first time with the bullet - he's hidden that away. The second time around, she wound up pulling him from the river he took them down, talked to him, gave him the chance to explain, swallowed the most impossible thing she'd ever heard and then jumped through every bureaucratic hoop known to man to get his former life back, arranging for everything to be put right with the feds (all while knowing very well that "Ethan Sampson" was a false identity - who the hell has to go to Denver from Washington state, just to get their "real" identification?
)
So yes I can edit, I'm not sure where you want me to do so? Well, without completely breaking my character as well, because in no way would Bree be cool enough in this moment to "rationally appeal" to anyone.
What if, perhaps, Ethan does watch her walk away - but then has a dark midnight of the soul or some such and comes after her? If she can find him, surely he can find her as well. At some point during the attempt to retrieve the boy, he assuredly will discover that this mob is the same one that Victor had turned on, and that Victor's defection from this particular crime syndicate (which might have brought down the entire organization if he lived) predicated such vile measures.