From the ‘70s or early ‘80s. A girl goes by herself to live with a relative (grandma or aunt) but when she arrives, the relative isn’t there for some reason, and nothing was communicated to the girl’s mother, so she decides to stay in the relative’s house and do things on her own. She cooks, cleans, does grocery shopping, etc., and tells the people of the town that her relative is at home and the girl is just doing all the errands. It’s NOT Charley or The Girl Who Ran Away.