WAPATO. Wash. — A White Swan woman was in satisfactory condition after a crash that killed another occupant of the car she was riding in Wednesday night, officials said.

Lavina Slockish, 27, was being treated at Harborview Medical Center in Seattle, a spokeswoman said Thursday afternoon.

Joyce L. Slockish-Kelly, 64, also of White Swan, was killed in the two-vehicle crash 15 miles west of Wapato on Wednesday night, the Washington State Patrol reported. She was not wearing a seat belt.

Slockish-Kelly and Lavina Slockish were passengers in a Lincoln Town Car that was struck by a Ford F-150 at the intersection of Fort and Tecumseh roads about 5:20 p.m. Troopers said the pickup driver, 24-year-old Forrest Stwyer of White Swan, lost control due to icy conditions while westbound on Fort Road. His vehicle collided with the Town Car, which was eastbound on Fort Road. Stwyer was not hurt, troopers said.

The car’s driver, 44-year-old Colleen Slockish of White Swan, was among six patients from the wreck.

Others were Cyrus Yazzie, 29; Herbert Stwyer, 27; Sarah Slockish, 48; and Fermin Lamas, 52. No injuries were listed for Damian McGee, 4.

All are from White Swan. Herbert Stwyer was a passenger in the pickup; the others were in the car. Everyone was taken to Yakima Regional Medical and Cardiac Center except for Lavina Slockish.

Colleen and Sarah Slockish and Lamas were in satisfactory condition at Yakima Regional, a spokeswoman said Thursday afternoon. Yazzie and Herbert Stwyer were not listed as patients, she said.

Troopers said some occupants were not wearing seat belts. It was unknown whether intoxicants were involved, according to the news release.

The investigation was continuing; any charges are pending, authorities said.