This report is from the Corp of Engineers:

"At approximately 1800 hours, Grapevine Fire Department and EMS were dispatched to Scott's Landing Marina to respond to a female subject who was injured while operating her personal watercraft (TX6709AT). The caller stated that Operator1 was leaving the marina and just outside of the no wake zone when she hit a wave wrong causing her head to strike the handle bars on the PWC. This caused Operator1 to be ejected from the PWC, according to US Coast Guard Auxiliary patrolman. At this time, the mother was in a pontoon boat behind Operator1 and called Grapevine Dispatch regarding this accident. With the assistance of CGAux, Operator1 was loaded into the pontoon boat and taken to Scott's Landing Marina for medical attention. During this time, the patient began losing consciousness as a result of the incident. Based on the extent of her injuries, she was transported to Parkland Hospital in Dallas via Care Flight at approximately 1845 hours.
All parties were wearing life jackets and did not appear to be under the influence of alcohol."

Grapevine                     