looking for female relative of Sadie Purdy Foster Flook Latham that is in the attached photo from 3/27/40

The black & white photo was taken 3/27/1940 and was found in my Grandma's photo album next to a pic of me that was taken in 1992.  The other photo, taken in May 1980, is of me (age 10) sitting on my Great Aunt Barbara's lap and my hand is on my Grandpa's (Henry I Latham) hand.  Everyone is baffled by this photo b/c it looks like my twin, only it was taken 30 years before I was born.  Most of the family believes she is from my Great Grandmother's side (Sadie Purdy Foster, Flook, Latham 2/20/1882 - 3/8/1965). From her first husband, Herbert John Flook (12/7/1882 - 1/24/1914) she had 2 children that survived: Herbert Sheldon Flook and Lillian Marguerite Flook. She married Fred Leroy Latham (7/9/1859 - 12/14/1926) on 9/4/1920 and had 3 children: Henry I Latham, Raymond E Latham, and Agnes R Latham.  3 days ago I started a 14 day free membership on ancestry.com and haven't been able to solve the mystery yet.  Any and All help will be greatly appreciated!
Feel free to look my family tree up on ancestry.com - Chanly1221 - Ocala, FL.  If you can help me fill in the blanks, or direct me to another source of information, again, any and all help will be greatly appreciated!  I just have to find out who is in this picture, if she is still alive, and if so, where she is so I can meet her! 
Looking forward to hearing from you!