So far I haven't found Eda Melvina, but you are right about her sister Rosie & husband in Newkirk Cemetery, Kay Co.
There are other Mauk's there, too, in case your interested. There is a Pearl & her husband, & a Roy D. They all are buried next to each other, according to my cemetery records. If you wish that info, let me know & I can give you b. & d. dates & plots if you want.

I did find William Surber (brother) living with Ephram & Eda Black in Iowa.He was 17.