Hello, I beat Aelfred's Battle-Sow at power level 100 and just learned it was supposed to drop Petra's arc a predator bow. However, Petra's arc did not drop for my character. Neither did it appear in my letter box. I've tried restarting the game, fast traveling and going back to the boss fight area.

Hello, I beat Aelfred's Battle-Sow at power level 100 and just learned it was supposed to drop Petra's arc a predator bow. However, Petra's arc did not drop for my character. Neither did it appear in my letter box. I've tried restarting the game, fast traveling and going back to the boss fight area.