Right and there was a reason for the shovel I know shes not very bright but really burying a body in the backyard when her daughters going to be missing as soon as everyone finds out. I would think her parents might notice a 3 x 3 burial spot in the yard. She only had the shovel for 15 minutes or so what could you bury in that time. There were new pavers, sand, bambo and if I recall they moved a bush. How much did the police dig I dont recall. Plus they never found any shoes and there was nothing on the clothes they did find to give them any clues. Just a thought..
I think she probably thought that under the pavers would be a good spot, but reconsidered when she found it required effort and time to move them.