The herbalist's name is Tomira.
Enter her house and speak to her.
See map below if you need help finding Tomira's House.
- When speaking to Tomira about Lena, choose the dialog option "Griffin do that?" and you will receive a secondary quest called "On Death's Bed". If instead you answer "Looking for buckthorn", you will ignore that quest.
- Instead of talking to Tomira, you can go directly to the riverbed and get the Buckthorn. If you do so, this objective will be skipped and Tomira's House will be inaccessible.
The Beast of White Orchard Quest
- Ask the Herbalist about buckthorn
- Find some buckthorn on the riverbed using your witcher senses
- Ask the hunter where he found the bodies
- Use your witcher senses to find the hunter
- Kill the wild dogs
- Talk to the hunter
- Follow the hunter
- Examine the site of the Nilfgaardian soldiers' death using your witcher senses
- Follow the Nilfgaardian soldiers' tracks using your witcher senses
- Search the griffin's nest using your witcher senses
- Talk to Vesemir
- Prepare to fight the griffin
- Meet Vesemir in the field where you plan to ambush the griffin
- Kill the griffin
- Take a trophy from the griffin's corpse
- Collect your reward from the Nilfgaardians