有两件事可做......

1. 找National Center for Missing and Exploited Children, 向他们寻求帮助. 他们的网址是:www.missingkids.com. 上面有800电话. 他们能提供很多帮助.

2. 找the Statement Department, office of Children Issues. Here is the link: http://travel.state.gov/family/abduction/incoming/incoming_4173.html
不过中国不是Hague member, Statement Department 可能管不了. 但试一试总比什么都不做好. 祝你朋友好运, 早日与孩子团聚!