Because it is a f***ed up system. The fact child service can take children away, is a problematic system and have been criticized for its flaw by a lot of people, including reform agency. In some country, child protection agency don't have the right to take a child away from the parent, they can only ask for the child removed into an orphanage or foster home to the court. The final decision is made by the court. So, child protection cannot misuse their power this way. And unless the court make a mistake, stuff like these won't happen.