Caroline was last married to Rev William York Winegardner in 1878. I have their marriage license where she is listed as Caroline A Searight.
She died in April 1879 . . . Indiana started keeping death record in 1880. I did find an article in one of the Cass Co, Indiana, newspapers that todl about her funeral sermon was preached by a minister from Mexico, Indiana at SKinner Church in Cass Co. However, that church congregation no longer exists and I have yet to find out if any church obtained their records when they disbanded.
I did find in the Rev Winegardners obituary that he was buried by his wife Nancy and his third wife, which would be Caroline. Now I have another relative of thre Rev's (a descendant of his form his first marriage) who is looking into who is the caretaker of the cemetery where she is buried.
I shall check into the Michigan Death records link you sent me and see what I can find.
Thank you so much for your help.