When the planet's environment became poisoned by radiation fallout from an asteroid, she moved underground with the rest of the colonists. Over time, she forgot her Human heritage and eventually went by the name Nadet. During her lifetime, she had at least one child, a son named Jamin. She blamed Humans for bringing the "poison rain" to her colony, when she was "no taller than a digger."
She was later reminded of her Human origins by the crew of Enterprise NX-01 when they visited the planet in 2151. Nadet and her son were brought aboard Enterprise for medical treatment. It was found that she had lung cancer, though it was easily treated and cured by Doctor Phlox by administering her cytolytic injections.
Nadet had no memory of her Human existence until Captain Jonathan Archer showed her a photo of young Bernadette with her mother, Vera. This evidence helped Nadet to remember her past, and that she was Human. She was also told that an asteroid, not Humans, had poisoned their atmosphere. Enterprise discovered that her people were being poisoned by contaminated ground water from the radiation that had seeped into the ground. She helped to convince the Novans that they were Humans and should return to the surface. (ENT: "Terra Nova")