"It lit up like Christmas," Ms Massis Class said.
The beekeeper said he had never seen a hive go that far down into the wall.
He tracked it to a coin-sized hole in the corner of an attic vent.
The beekeeper - whom Massis Class's daughter began calling the monster hunter - opened the wall to reveal a large honeycomb.
"They just came pouring out like a horror movie," Ms Massis Class said.
The beekeeper has removed between 55,000 and 65,000 bees and 100lb (45kg) of honeycomb.
There have been three extractions by reverse vacuuming the insects out of the wall to put them into boxes. The insects are being relocated to a honeybee sanctuary.
Ms Massis Class has had to screen off the room between extractions to prevent the bees from buzzing around her home.
The honeybees and their honey damaged the house's electric wiring, Ms Massis Class said.
She said her homeowner's insurance won't cover anything pest-related because they deem it preventable.
She estimates the bees have caused more than $20,000 (£16,000) in damages.