Adham, 26, turned herself in to Beverly Hills police on Monday. Police issued an attempted murder warrant for her arrest earlier on Monday. Adham is being held without bail.
Adham's friend, Brian Burton Scofield, 29, who is "a person of interest" in the case, also arrived at the police station with Adham. He was booked for a misdemeanor traffic warrant for past violations.
Scott Ruffalo, 39, was shot in the head Dec. 1 at the condo where he lives on North Palm Drive in Beverly Hills.
A well-known hairdresser who worked in salons such as Kenneth George in Santa Monica and Giuseppe Franco in Beverly Hills, Ruffalo has had past run-ins with the law. In 2002, he was convicted for possession of a controlled substance with intent to sell.
He is currently in a Los Angeles hospital, where he is reportedly in critical condition.
Beverly Hills Police Department