I may have found your Sarah Jane. I believe it was a Noah Carmean that my ggg grandfather, George W. Carmine traveled to Fulton County with. I looked Noah up on genforum.com and one of his children was a Sarah Jane, and judging when Noah was married, Sarah Jane's bdate would have fit. I think I mentioned they left Pickaway County around 1949, so if there is a Noah Carmine or Carmena in the Illinois census with a daughter Sarah Jane, it would probably be who you're looking for. Noah Carmean is posted by a Jeffrey Carmean.
Now if I could figure out what relation Noah is to George and my Curtis, everything would be solved for me!