It doesn’t mean they found her body. They typically file charges like this so they are able to hold the suspect, until additional charges are filed. So we may see other charges along those lines, in addition to the more serious murder charge.
The charge they have him on is pretty broad.
§ 18.2-323.02. Prohibition against concealment of dead body; penalty.
Any person who transports, secretes, conceals or alters a dead body, as defined in §
32.1-249, with malicious intent and to prevent detection of an unlawful act or to prevent the detection of the death or the manner or cause of death is guilty of a Class 6