She was born in Thundertree of unknown parentage. She became one of Lord Nasher Alagondar's most trusted advisors and a member of his elite bodyguard. In Neverwinter, she met and became engaged to Fenthick Moss.
When the Wailing Death swept through, Aribeth was placed in charge of combatting it. She worked with Khelben "Blackstaff" Arunsun to obtain a cure, involving certain parts of four Waterdhavian Creatures. While attempting to keep this a secret, she stashed the creatures as the Neverwinter Academy during the graduation. This led to the attack on the Academy, which she helped to defend. Then she sent the soon-to-be Hero of Neverwinter to protect the Waterdhavian Creatures.When the Waterdhavian Creatures escaped, she brought the adventurer in on the hunt to find them -- offering a Stone of Recall to help them. She also took up running the temple services in the Halls of Justice, for the Church of Tyr was suffering under the effects of the plague as well. When the Hero brought all four reagents to Aribeth, she brought him to Castle Never to see cure's creation.
- "Lady Aribeth is the epitome of grace and concentration, although she is obviously preoccupied with worry for those suffering from the plague." (Prologue)