"They've lost a truly loved and valued member of their family and we urge media to respect their privacy while they begin the process of confronting this loss."
Norton earlier said they had "serious concerns" for the mother-of-three and appealed for urgent sightings. They were also searching for her white Mazda Axella hatchback.
Her disappearance was out of character, according to friends who were worried all day today while a large police operation was under way.
Locals believe that Quinn, who works in an office locally, went home from work around lunchtime yesterday and hadn't been seen since.
Her social media page appears to be down.
Quinn recently moved from her Power Rd property in the Greymouth suburb of Karoro to Shakespeare St, it's understood.
Two police cars have been seen outside the Shakespeare St house today. Another house in Cobden was also the subject of intense police activity.
Quinn is well-known in the tight-knit West Coast town as a quiet, kind, and hard-working woman.