At the same time, Stefan's sister, Mara, linked up with him and on behalf of his son Đurađ, who led his forces in army of Musa, tried to fix the relations between them and reconcile them, in which she succeeded. Musa forces in the fall 1411, attacked the town of Selimvria on the Sea of Marmara near Constantinople, in which it had been the son of Süleyman, Orhan, whom was the candidate of Byzantine emperor Manuel II Palaiologos for the Ottoman throne. During the siege, Musa tried to kill Đurađ, but he managed to save himself by escaping to the town of Selimvria, with his troops. Then, from Thessaloniki, he back in the fall 1412 in Serbia and reconciled with his uncle Stefan, which ended the conflict between two families that has caused division in Serbia.