This is another photo from what I call The German Collection, a group of family photos that sisters Edna and Viola Germann once had. I am in the process of scanning the collection and fortunately many of the photos are labeled.
This photo is labeled “Aunt Amelia Schumm, La Porte, Indiana.”
Amalia K. (Backhaus) Schumm, wife of George “Jacob” Schumm, was born 24 February 1859. She married Jacob Schumm on 14 October 1880, which was Jacob’s second marriage. His first wife, Carolina “Lena” G. (Kellerman), died in 1879 and is buried in La Porte, Indiana. 
Jacob and Amalia likely lived in LaPorte all their married life, until Jacob died on 11 February 1895. He is buried in Saint Johns Lutheran Cemetery there.
Amalia died 6 January 1948 and is also buried in Saint Johns Lutheran Cemetery. 
I am able to date some similar photos from The German Collection and this photo was probably taken about 1900.
Amalia would have actually been Edna and Viola’s grandaunt by marriage. Amalia’s husband Jacob was a brother to Edna and Viola’s grandfather J. Fredrick Schumm. Close enough. Their parents probably called her Aunt Amalia and the two sisters likely called her aunt, too. I know the same thing happened in my family.
Amalia and Jacob had the following children:
Gerhard William (1881-1959)
Otto Henry (1883-1981)
Hugo Julius (1885-1929)
Oswald Frederick (1889-1974)
Lorenz George (1891-1959)
Wilhelm George (1895-1988)
 Find a Grave (www.findagrave.com : accessed 13 August 2015); Carolina G. Kellerman Schumm, memorial #96017088. Note: She is buried beside Jacob and they share the same monument.
 Find a Grave (www.findagrave.com : accessed 13 August 2015); Amalia K. Backhaus Schumm, memorial #96016949. Note: Her single marker indicates that she was the wife of Jacob G. Schumm.