La ley del colmillo afilado

Defeat 6 Wolfes - Wolves you skin will give you Thick Hide.

To get all wolves you can kill Fangsnap inside of the cave, it will summon two wolf companions, they also count for the quest. There is also a supply stockpile and chache in there.

Search for Caryn's Note - Caryn's Goodbye Letter can be found at Caryn's location (pick up point for the quest), where she left it behinde.

You can not collect her letter before because the step to collect will only trigger with entering the Sunshade Plains area.

Caryn Berzs will be gone during the quest, so you have to complete it at Rilette Wilson, can be found in the Restless Shore Settlement.