LaVonne was born on December 5, 1930, in Lynd Township, Lyon County, to Hubert and Ella (Oldenburg) Schrunk. She attended Lynd Public School, graduating in 1948. On August 17, 1954, she was united in marriage to Louis Otto at Holy Redeemer Catholic Church in Marshall. To this union two sons were born. She worked many years at a local accounting firm of Gold & Carlson, also known as Minehart, McKee & Associates.
Survivors include her son Steven (and Teresa); sisters Margaret Clark and Janis Brockhouse; three grandchildren and four great grandchildren. LaVonne was preceded in death by her parents, husband Louis, son Gary, one brother and one sister.