Fortunately, all turned out well and she was able to leave the hospital three days later. What had caused this incident was a strand of wire from the wire brush was left on the cooking surface of the grill and when hamburgers were grilled it stuck to one of the hamburgers. After she took a bite and swallowed the hamburger she also ended up swallowing the piece of wire which was attached to the hamburger. Also, inspect the underside of the lid to make sure that no strands of wire are stuck to the underside of the lid. Best practice is not to use a wire brush for cleaning.
Some individuals use a paint scraper to clean the grill.
One could cover the surface of the grill before grilling with extra heavy duty aluminum foil and this would prevent contact with the grilling surface. Don't transport anyone who is in need of or who you suspect is in need of serious medical care yourself. In this case the couple was scolded numerous times by doctors and nurses for transporting their daughter to the hospital by car. Had the wire been lodged above her epiglottis and dislodged, she could have inhaled the wire which could have went to her lung and caused a potential life threatening situation. Also, if the wire, while in her neck, would have pierced her carotid artery this would have been an immediate life threatening situation without having the opportunity for immediate medical attention.