Sebastopol resident Amanda Odeen, 18, remained in a Santa Rosa hospital Wednesday in serious condition following Monday’s crash that took her right arm.

Odeen was being treated in intensive care at Santa Rosa Memorial Hospital, according to a hospital official. She suffered life-threatening injuries in the afternoon crash on Mill Station Road.

CHP Officers arrested driver Thomas Henney, 21, of Forestville, suspecting he was impaired from marijuana and possibly prescription medicine. Henney had been held in jail with $100,000 bail but Wednesday afternoon was released when the District Attorney’s Office didn’t file a felony DUI charge against him.

Henney is set to return to court Feb. 28 should prosecutors move ahead with a case. Blood test results checking for drugs often take several weeks to be returned.

The 1:40 p.m. crash occurred just south of Occidental Road near Graton.

Henney lost control of his Buick LeSabre and ran off the rural road, rolling into a field. Odeen wasn’t wearing a seat belt and was thrown from the car, which landed on her as it rolled, according to the CHP.

The impact nearly severed her arm just under her shoulder. She subsequently lost the arm after being transferred to the hospital.

You can reach Staff Writer Randi Rossmann at 707‑521-5412 or randi.rossmann@pressdemocrat.com. On Twitter@rossmannreport.