I have a Lavina Louderbaugh (also spelled Lauterbough) in my records. She was born 1875, and is the daughter of George C. Louderbaugh and Lucy Watson. George was born 26 Oct 1847 in Ashland, Wapello Co., IA, and died 4 Aug 1925 Dutton, Teton Co., MT.
George's parents were Milton Lauderbough and Ann Clark (my 3rd-great-grandparents).

It doesn't sound like the birthdates would be right for your Lavina Lauderbaugh-Stevenson, though?