Once the Baroness of Howls in the Nightmare Court, when Mordremoth awoke the one she thought most loyal to her began hunting her down, and she ended up losing herself to the call at the worst possible time, just as she was merging with one of her nightmare hounds in hopes of escaping her Knight's fiery wrath.
Transformed into a quadrupedal beast of thorns, Nytum wandered the jungle, attacking anyone she came across, obeying her master's will along with her twisted pack of hounds.
That was until the attack on Auric Basin, where a moment of hesitation at a familiar face resulted in severe wounds. Maimed and blinded by the pain, she ran away aimlessly until she fell into ancient ruins, deep enough for the dragon's call to give her respite as she struggled to survive.
The events after Mordremoth's deaths are blurry for her: the sudden silence giving way to the panic of clarity, desperation and begging for mercy at the golden city's gates, receiving news so heartbreaking she returned to her real self for the shock, and then lots of waiting and... kindness she did not deserve.
It took years for her to return to a life one could call normal, all thanks to old friends and enemies forgiving her, especially one of them who opened both her arms and heart to her, but now things are... fine. More than she deserves, probably.
She's learning how to be a merchant, she's seeing things in Tyria she never considered before, and, as unpleasant as it is, she is ready to transform into a wretched creature of thorns if what she loves is threatened.
Still, Nytum kept something from Maguuma, a Mordrem wolf she found and tamed to prove to herself that, if there was hope for such a creature, then there was hope for herself.
Grimbloom is scary, so most of the time they hide its true appearance with illusions, but it's a softie and eager to help out. Maoulmuire doesn't mind, she's a necromancer after all, and Apribag does like a seemingly tireless beast to carry more wares.