It's just that I don't really like "Karma Houdini" situations. To be sure, what Lucas might do in anger is different from what she might do with time to cool off. Fury might lead her to rough the guy up. Rage might lead her to do something she might regret. Badly.
Given time to cool off, though (which she now WILL have), she'll just screw the guy over (or even simply produce some evidence of what he's been doing and hand it over to the police and to Jay).
Also, I AM exercising restraint here, I hope - I'm not going after him just yet, etc., and I don't plan to go all out.