Thank you for your help! I wondered if "Miss," suggested she hadn't married Chas. Roberts (or never married, perhaps). I will definitely keep that in mind while searching. I have not been able to locate Lee's obituary online, but I have been looking into contacting a local library to see what kind of records they might have in terms of obituaries.
As for being of a certain faith, I do no know. My grandfather was raised by a maternal uncle from the age of five (Lela died three years after Lee), and I've never heard much about whether they identified with a specific religion.
Thank you for your suggestions, I will definitely keep all of those ideas in mind when I search.