Something about being referred to as 'collateral damage' is ironic to Rey. And what 'Firo' says does strike her as interesting.

"That right?" She flips the bottle, before cracking the top section over the counter. It breaks, but allows only a little bit of its contents to escape. "Then I guess I won't feel too bad doing this."

With that, in a seemingly futile and pointless attempt, she hurls the bottle at 'Firo'. Dousing him in alcohol.