Can you give any more info about them?Ages, where born, names of children?
There are a couple of Annie Grants I found on familysearch that might be the right one, but not sure.1910 census, Annie B. Grant, age 51, b. VA, "widowed", children Elsie, Ethel and Vernon, living in Lyon Co., KS.
Also, Annie, wife of Joseph Grant, living in Crawford Co., KS.He is 37, she is 28, children John, Annie, Mary, and Zepha.
If either one of these fits, contact the appropriate county clerk's office for divorce record.