Arbutus Ray (played by Patience Cleveland) was a nurse.
In 1979, Ray was employed at Dominic Savio Memorial Hospital in California. One night two detectives admitted a 14-year-old girl, Samantha Mulder. Unbeknownst to them, she had fled from April Air Force Base to escape experimental tests. Ray cared for her, though soon Ray had an odd vision of Samantha dead, but no one believed her. Soon, a group of men in suits had come to retrieve Mulder, including one who smoked, but Samantha vanished before Ray had led them to her room.
In 2000, Ray relayed her story to Dana Scully and Harold Piller. She was shocked that they would believe her story. (TXF: "Closure")