Runaway? Or Castaway?

Ian Urbina's NYT story on "runaways" is gripping stuff, but down about midway you run aground on a complication apparently beyond the capacities of a headline writer. That is: some uncountable portion of these kids-on-the-street are not "runaways" at all, but kids who have left home on orders from, or with the active collusion of, their parents, who cannot afford them any more--call them "castaways," a new innovation in outsourcing. Like taking your pet to the pound.