People in the Fortress of Law have been forced into unnatural arrangements for quite some time now. Some minor strife now will provide both a natural release of those tensions, and an excuse to correct any unfortunate qualities of the resulting arrangement when Sevar returns from her recovery vacation with the Queen.
Besides, it will probably be good for Sevar, a start on her new Asmodeanism, if she returns to a situation that requires her to correct her slaves with fire and lash.