Mary E. Ashby is one of my second great-grandmothers. It appeared that she died rather suddenly.
The following death notice is from page 3 of the July 8, 1891, Chicago Tribune, found at Fold3.
Mary's daughter, Mrs. Charles C. Adsit, is her younger daughter, Mary Bowman Ashby, who had married Charles Chapin Adsit the previous October 30, 1890.
I will be sharing more information about this second great-grandmother in the next few days.