Helga was one of the first members of the Pack of Shadows. She wasn't originally an Herbalist at the beginning, using her skills instead as a hunter, working to help feed her pack. After a few months and a few puppies, Helga settled into her role as the pack's healer, finding herself much happier than she was as a hunter.
Ragnar found her only days after he'd fled his original pack, when she was starving and weak, so he took her in and nursed her back to health with food, clean water, and a warm, safe place to sleep. In return, she's worked her tail off day and night to ensure that he and all the other pack members are healthy.
Her skills as an Herbalist were doubted up until the Influenza outbreak of October 2020 hit the pack, affecting 75% of the pack, including Lagertha, the pack's Queen, and killing all of the puppies. Helga quickly quarantined the infected who were still alive and sent Ragnar off with an extensive shopping list: influenza cures, herbs to make the cures, and extra healing salves to keep their strength up while she worked to save the sick.
Other than the pups that were lost to the infection early on, Helga saved all of the infected wolves and her skills were never questioned again. She's treated with the utmost respect, and you can always count on her to heal your sick wolves quickly and effectively.