Police say a 43-year-old woman who says the girls were her adopted daughters has been arrested. Renee Bowman told deputies that the remains had been frozen since at least February.
The sheriff's office says investigators also found a 7-year-old girl after she jumped out the window of a locked bedroom.
Investigators say Bowman told them she beat the girl. She is charged with child abuse and is being held without bond.
No telephone listing was available for Bowman in Lusby.