We are attempting to help our adopted daughters find their birth mother, Sandra Jane Keaton, born 6/10/55. We have found that Sandra's parents lived in Traverse City, Michigan, where Sandra was born. Their names were Orville and Patricia Keaton. Orville was born 3/25/21 and passed away 9/11/94. Patricia was born in 1928 as Patricia Ann Wardhouse. We have done a phone number search for her, but have not been able to find her. Does anyone have ideas how information can be found without having to spend money on it?