I would take a look at this record and see if it relates, there is a note over at Find a Grave:
"Rosemary: My mom died of stomach cancer. I know she had 3 kids before us. 2 boys and a girl."
Mabel Gladys Lux Palutis
Find A Grave Index
https://www.familysearch.org/ark:/61903/1:1:7J9M-LK3Z