Case solved on Rosalee Myrtle Farr Sixbery Place, per an obituary look-up in Arkansas. With lots of detective work, I found that Myrtle Sixbery and Rosalee Place are the same person. I found that Rosalee married Earl J. Place in about 1920. This mean that she went back to her first name after William died, some where between 1910 and 1920.
Now I just need to find out what happened to her daughter Gladis, who i cna find no information on after 1910.