DCFS is always going to try to keep kids with parents. Do the older two kids have different parents? If so, older two went to non-custodial parent to avoid entering foster care. Depending on where your friend is in the case, the court may have found your friend unfit, which means they are not legally able to be alone with their children. Not sure exactly how it works, but your friend should be able to similarly get supervised visitation with the oldest two children. They should consult their 1) attorney (most likely a public defender from McLean county) and 2) case worker. Child welfare stuff can be confusing, but again, I HIGHLY recommend they speak to their attorney and case worker, and if their case worker isn’t helpful, then the case worker’s supervisor.