I don't know it all seems odd to me. Basically, a lady got a gravestone made for her husband. She doesn't like it, discards it by digging a hole in her backyard and burrying it. Now, it seems like a pretty freaky coincedence that around the area she decideds to discard of the stone, there already is a dead body?? It's either that (a 1 in a million coincedence), the daughter has no idea what she is talking about and it is in fact her father's body in the yard, or there is some strange conspiracy/cover-up (ie pretend its his body when its someone elses) going on!
PS sorry about any spelling/gramatical errors...in a hurry....