Sorry to hear about your niece.The child's parents may be able to file a lawsuit in federal court.  The federal court would be in the state in which they reside.  Generally, when a U.S. citizen sues someone who is a citizen of another country or an entity in a foreign country, the federal court in the state where the U.S. citizen resides would have jurisdiction and would be the appropriate court for filing the lawsuit.The lawsuit in this case would be for wrongful death which is a negligence-based lawsuit when a death occurs.The parents should obtain the medical reports and medical bills as supporting evidence of their claim.  The parents will need to file the lawsuit prior to the expiration of the applicable statute of limitations or they will lose their rights forever in the matter.