Mike, You can follow her in the personal property tax lists until she doesn't appear. That point would be a good place to look for the disposition of the slaves and the livestock. These could either be hers for life from the estate of her husband or they could have been her dowry. You should also look on the land tax records and see if you can determine where she is living and if the property is held by the estate of her husband or if she has a life estate and the property owner is a son or daughter (son-in-law) would appear in the tax list. There are sometimes notes or alterations in the land tax book when the land changes hands. Thus if she followed a child to some place else or died it may be noted in the alterations section of the tax book. You can borrow these records from the Library of Virginia if you live in Virginia or bring them into a Morman library.