I received a response from Klingner-Cope Family Funeral in Springfield, MO. Here is the information:
Name: Della Herring
Date of birth: September 10, 1893
Date of death: January 2, 1972
Time of death: 6:15 am
Place of death: Home / Sunshine Acres
Father: William M. Herring
Mother: Sallie A. Byers
Internment: Greenlawn Cemetery
Survivors: Gerald M. Carothers, nephew and Mrs. J. W. Jesiel, niece
This would confirm I have the right Della Herring. It also provides where she was interned and a name for her niece, although I'm sure it is her husband's name. But, it's a start.
Greenlawn Memorial Gardens is also known as Greenlawn Cemetery
3506 N National Avenue
Springfield, Greene County, Missouri 65803
I'll have to contact them next to get the location of the grave and whether or not it has a marker. Perhaps they will send me a picture of the marker, if there is one.