The girlfriend of the Australian tourist charged with causing the death of a California teenager in a personal watercraft crash at Keehi Lagoon has been charged with second-degree hindering prosecution.

Natasha Ryan, 21, of Brisbane, Australia, turned herself in to detectives at the Honolulu Police Department’s South Beretania Street headquarters at 3:35 p.m. Friday and was released 40 minutes later after posting $500 bail. Police said she misled investigators during the negligent homicide investigation.

Hindering prosecution is a misdemeanor punishable by up to a year in prison.

Ryan’s boyfriend, Tyson Dagley, also of Brisbane, was arrested and charged Thursday with third-degree negligent homicide for causing the death of Kristen Fonseca, 16, of Vacaville, Calif. The collision occurred Sunday afternoon.

In a police report filed in District Court Friday, investigators said Dagley was standing on his rented watercraft before it hit Fonseca’s watercraft from behind. The report said he was not paying attention to where he was going, only looking at his girlfriend, who was taking video and photos.

The report said Ryan told police that Dagley was going slow or at medium speed throughout his rides and before the collision was sitting down and looking straight ahead. She said she didn’t see the collision and didn’t take photos of it. 

A forensic computer examiner with HPD was able to recover two deleted video segments from the memory stick in Ryan’s Olympus camera, one of which shows the collision, according to police. In the video, Dagley appears to be standing on the watercraft, the report said.

Ryan is scheduled to appear in Honolulu District Court on Sept. 7.