My paternal GM died in 1928 in what was then the MS State Mental Hospital. On her dc there is a statement that she was buried in "hospital cemetery". The building now has a different name, but the cemetery is still there. Their website does not include her name on the list of those buried there, but she probably is. Volunteers and at least one other researcher stated there are many graves sunken in with no marker or headstone. I just know in my heart that she is there, and I probably will never know exactly where. Unfortunately, I know nothing about her family and have no one to contact for information on her side (Dobbins). Good luck to you!