While I am sure this has not been overlooked, I'll also reiterate that Morek threatened to punish any aggressive action taken by D'Hara against Luria.
Right up until the recent negotiations where Morek's Grandmistress refused to sign a treaty obligating them to war against D'hara for failing to meet the obligations of said treaty, but they were perfectly willing to stop Luria from seeking compensation for D'hara's failure to hand over the West Marches in a timely fashion. Morek lost all claims to neutrality there.