Mardell was born in Moberly, MO. She was the daughter of R. Price and Erdice B. (Fray) Hulen. She graduated from North Kansas City High School in 1947 and attended business college.
Survivors include her husband of 68 years, Darrell Davis; daughter, Dinah and her husband, Bill Ragan, of Parkville; grandson, Allen Davis Ragan; nieces, Macie and her husband, Steve Cowden, of Liberty, and Debbie and her husband, Dr. James Westfall, of Smithville.
A note to the love of my life: Know that I live on behind a veil you cannot see through. You will not see me, so you must have faith. I wait for the time we can be together again. When you need me just whisper my name in your heart….I will be there.