This paragraph from Sheridan's book, does seem to say there were kids in the home that appears to be in Richland, WA (with an soon-to-be ex-wife)
But if kids could work, they'd be older? Maybe these were kids from wife's prior marriage.
A caseworker visited Grecco's home. She poked about in the kitchen and basement looking for hidden caches. She spoke with the neighbors. Was Grecco working? How about his wife? Did she have a part-time job? Did the kids work after school or on the weekends delivering papers or baby sitting? After that no one would associate with the Greccos. He was a leech, living off the hard earned dollars of the taxpayers. It was as though the family had some horrible disease, were outcasts, lepers. "The poor woman," they would say of Vince's wife. "Putting up with that useless bum. I'd throw him out in the street.