Without a more exact date, I can't be of much help for Luella, unless you think one or both of the following entries on http://omahaobits.wordpress.com
might be her, even though the year is different than what you provided:
ANDERSON, Luella (Mrs.); 84; 24 Sep. 1945 OWH eve p 15 (x2) @ Forest Lawn
ANDERSON, Luella (Mrs.); 84; 25 Sep. 1945 OWH eve p 15 @ West Lawn
This same site provides an apparent match for Frank:
ANDERSON, Frank; 15 Jun. 1924 Omaha Bee @ Forest Lawn cremation
I'll head to the library to pull Frank's obit once I hear back from you about Luella.