My son would sleepwalk when he was little. I remember seeing him step into the hallway and jumping up to quickly guide him back to his bed. However, the woman in this news report from 1913 managed to exit her home and hit the streets in her night clothes.
Woman Walks Streets in her Nightie — She was Asleep
Awaking to find herself on the streets after midnight, clad only in a silk night dress, with her hair down her back, a strange man’s shoes on her feet and her excited husband and three strangers staring at her, was the novel experience of Mrs. Jennie Eubanks.
Three men discovered her walking along the street with her eyes open, though she was groping her way. They decided she was sleep-walking and shouted at her to awaken her, but it was impossible. Then they shook her, but that had no effect, either.
Charles Marrs discovered that she was barefooted, and took off his number nine shoes and put them on her feet. Then one of the men turned around and started her homeward.
She had proceeded about a block when encountered by a man all out of breath in search of his wife. About that time the family dog leaped out of a dark shadow and barked. That aroused Mrs. Eubanks, and taking in the situation at a glance, she promptly fainted.
Source: The day book. [volume] (Chicago, Ill.), 18 July 1913.