Marion Co TOC

I am searching for any information about Opal Hurst. Opal is my grandmother's, Walsie Edith (Hurst) Huff, youngest sibling, daughters of Benjamin S. and Indiana "Indy" (Ritter) Hurst. Indy died in April 1917 from TB. Opal was born about January 1917. After Indy's passing Ben packed up his family and moved to Eufaula, McIntosh Co, Oklahoma. I find Ben and all the children except for Opal on the 1920 census for McIntosh Co., OK. Family rumor has it that Opal was left with a family member but no one knows who that family member was. I received two pictures from Imogene (Hurst) Whisenhunt daughter of Robert E. Lee and Anna (Bransfield) Hurst. Robert is the oldest son of Ben and Indy Hurst. In this first pciture she looks to be about 2 or 3 years old.
If anyone can tell me anything about Opal please contact me. Thanks Karen