Between being charmed and getting turned into stone, it's not really a difficult choice. Anyone reading this series this far has been charmed by Lily to some degree anyway.
I guess Hajime can keep interacting with Veronica, after all, since he got off lightly, thanks to the insurance. Still a scumbag move by Veronica, but if Hajime doesn't suffer personally all that much, maybe he can forgive her. Who knows, maybe Veronica even knew beforehand that the insurance would pay for it, but didn't mention it to make Hajime suffer for a while. She's a petty woman, after all, blaming others for her own mistakes.