A 12-year-old Vashon girl is in stable condition and recovering at Harborview after a fall off a building at Dockton Marina Friday afternoon.

Isa Sanson-Frey was still in the hospital’s pediatric intensive care unit with a severely lacerated liver Monday morning, but was expected to be moved to the main floor that day, her mother, Nicole Grey, said. According to Grey, Isa was at the marina and was about to jump off the roof of a bathroom on the dock in the marina that island children frequently jump off of when she hesitated.

“Her body started jumping but her brain got nervous, then she fell. She fell into the railing on the dock. Tummy first,” Grey said.

She was airlifted from Dockton just before 4 p.m.

Grey said Isa will remain in the hospital likely through today, Wednesday.

King County employees earlier this month were at the park cautioning island youth against jumping off the structure. On Monday, Doug Williams, spokesman for King County’s Department of Parks and Natural Resources, said he was glad to hear Isa is expected to recover, but the county does not “condone or allow these kinds of activities.”

“We have ‘no jumping’ signs stenciled along the dock railings leading up to the marina bathroom, and about a half-dozen years ago we modified the fencing and the bathroom structure roof to further discourage people from being able to climb up there and jump off,” Williams explained before saying that the building’s roof used to be flat, but it is now angled.