Joni, I am not related but did a few searches re: your message.Some of it is based on assumptions that I guessed at, as I found things.
The social security death index at www.rootsweb.com shows the reported death info on your Lois Wallace.Her ss# was 563-20-7466.SSDI shows her last reported address (before she died). She was reported to social security as living in Lynwood, Los Angeles County, CA).
Her Cal Death record confirms your notations that she died in Orange County, CA.
I ran all children born of a Green mother and Wallace father in 1930's in Orange County came up with none.
All Children born of a Green Mother and Wallace father in the 1930's in Los Angeles County revealed one child:
Wallace, Terry Earl b. 24 Nov 1935, mmn Green, b. Los Angeles County.
www.anybirthday.com showed one Terry E. Wallace with the same birth date living in zip code 91765 (Diamond Bar, Orange County, CA)
www.ussearch.com showed one Terry Wallace age 66 (current time) living in Diamond Bar, Orange County, CA.
Terry E. Wallace 21815 Manada Court Diamond Bar, CA 91765 (714)529-5329
Obviously, I made some judgments/decisions that the only child born in the 1930s in Los Angeles County, CA to a Green Mother and Wallace father might be a match to your Lois (Green) Wallace and would possibly be her child.
You didn't indicate when she moved to California, so I am not sure this information is relevant to you.However, I am hoping it might be relevant and might assist you.