Human mother to Arnon, a young man afflicted with the Werewolf's curse.

An Orc patient admitted to the House of Alarkus for his injuries from a Werewolf attack at the Festival of Heroes commends Earta's potioneering skill;

“You just missed her,” he explains. “Strange woman. Made me drink a potion that tasted like mud and earthworms. Not sure it did anything for my wounds, but it settled my stomach a bit.” - Festival of Heroes (GS-ADV1)

An Elf noble at the House of Alarkus also characterizes as Earta as strange, reporting that she may even be staying at the Temple of Shintal;

When you mention that you are looking for a Human woman named Earta, the Elf’s eyes light up with recognition.
“She was here just moments ago,” he admits. “She’s not part of the Erthalian Order, but she insisted on treating

the wounded. A very strange woman. I’ve heard rumors that she’s been living in the Temple of Shintal. ” - Festival of Heroes (GS-ADV1)