You demand that priests purify the tower.
They arrive, seven of them, one per God related to death, afterlife and such, and begin their spiritual work. After few hours they return to you.
"Oh good king, the tower in question truly is possessed by a ghost of terribly angry yet terribly sad woman! She clings onto the stones of the tower and does not wish to pass on so easily, surely a victim of very foul murder or mayhaps anguished soul who died of suicide. We will require lavish sacrifices to please the gods so that they lend their powers to help us drive her into the afterlife." You agree to that and have coffers of gold sent to the temples.
After few days, the priests deem the tower clean, and workers return to work - indeed they do not feel uneasy anymore. Problem solved!
853 AD, Autumn
After long pregnancy, your wife gives birth! Alas, the healers sadly proclaim that the girl was born dead.
Such a bad luck.
853 AD, Mid-Autumn
A Parsian emissary, in employ of Prince Suhar, arrives at your court! They have found Luathbas coins in the purses of slain and captured soldiers of Prince Oshfak.
He demands that you pay Prince Suhar the same amounts of materiel and gold, otherwise if he ascends to the power he shall deal with you swiftly and messily!
A) We ain't gonna tribute every Prince they have! Reject his demand.
B) You shall send Suhar equal amount of money and materiel.
C) Offer to help get Prince Oshfak into an ambush or something, just so you don't have to pay but remain at good terms with Prince Suhar.