Next, you must find a fur fragment and start following the red tracks in the air that symbolizes blood smell. Remain in the forest and look for werewolf’s tracks leading to the rocks and a tree inaccessible for Geralt. Geralt will deduce that a werewolf have murdered her. Slightly further you will find a mutilated body of Hanna.

If you refuse Margrit, then you must continue the search for Hanna in the forest. Red tracks will lead Geralt to hunter’s cabin You can take 10 crowns from him or refuse to take the payment. If you accept her proposition (72 experience points and 55 crowns), then you must return to Niellen and tell him that you couldn’t find his wife. She will try to convince Geralt to stop the search. A cutscene will start in which you meet Margrit, sister of the lost Hanna. After entering it, find a group of wolves near one of trees. Now you can go to the marked territory in the forest. Remain in the village and talk to two peasants – butcher’s wife Glenna and the local blacksmith. The man will tell you that his wife gone missing. Go to the Blackbough village west from Crow’s Perch (M3,) and meet with the hunter Niellen.

You will learn about this quest by reading a note after interacting with a notice board in Velen. You must find and attack a group of wolves in the forest.

The witcher 3 wild hunt wild at heart