Option 1: Abandon the investigation.
Hannah's sister expressed gratitude to Geralt for allowing Nivern a fresh start, awarding him a handsome payment.
Geralt returned to inform Nivern that Hannah had been slain by a beast deep in the forest, securing a second payout and concluding the quest.
This outcome let both survive and brought Nivern and Hannah's sister together.
Option 2: Persist in investigating.
Geralt declined her request and continued probing within the woods.
Examining the beast's corpse beside the tree revealed deep claw marks, and the ground nearby bore additional prints.
Nearby, Hannah's remains were found shattered by a formidable force.
Tracing the claw marks led to their disappearance on the tree; a fragment of fur lay on the ground, suggesting its owner had long neglected grooming.
With a witcher's scent detection, the trail led deeper into the forest to a hunter's hut, where clothing remnants, free of blood, lay outside.
Inside the hut, a mysterious note was found on the floor; a locked chest and another box containing a blueprint for an explosive arrow were also present.
Reading the note revealed the protagonist as a werewolf who, on full moons, withdrew from others and fled to a secluded cabin, distancing from his beloved Hannah.