As Dustfall grew old, she passed her wisdom to Bloodmist so he could continue her legacy and provide wisdom to the future generations.
Bloodmist was new to the pack at the time. But they accepted him right in. He didn't know where or what he wanted to be or do. But saw herbalist as a role of honor. So he accepted and listened to Dustfall's teachings.
When Dustfall passed they worried that Dustfall didn't have enough time to train her replacement. But Bloodmist had the basics and took off from there. Learning new things as he went. Now he is a fine herbalist and he is training the next in line early. His apprentice Is named Irna who he can feel is destined for greatness.
As he grew old, he looked to his apprentice. He taught her everything he knew and she already has an apprentice of her own. It seems he wasn't needed anymore and could retire knowing that everything will be okay. This pack has taken him in and took care of him since he first stumbled into the camp. It is now time to go.