Tegan, from Bemboka, Ben Halfpenny, 13, and Michael Clark, 14, both of Merimbula, were severely injured.

All three are in a stable condition in Canberra Hospital.

While declining to comment on Tegan's horrific injuries, Ms Koskela said she faced a daunting road to recovery.

"It won't be easy but she's a strong girl and she's got a strong family there to support her through this, and through the rest of her life," Ms Koskela said.

"We'll all be there for her, no matter what."

Ms Koskela said Tegan was breathing unassisted and was surrounded by her parents and siblings.

She last saw Tegan in December and described her as a "beautiful, outgoing young girl".

"At 15 she had such a bright future ahead; it's so sad it's come to this," Ms Koskela said.

"It's pretty devastating that someone so young is going through what she is right now.

"Something like this could happen to anyone - they were just in the wrong place at the wrong time."

Ms Koskela said the grief-stricken families of those involved in the accident were disappointed at insensitive remarks posted on a Facebook page set up in memory of Kylie Poyner.

The page was shut down suddenly this week after it was overrun with comments criticising Kylie's driving and blaming the parents of the teens for allowing them out so late at night.

"(The page) was for friends and family to wish them well and leave messages of love and support, and you have people sabotaging it," Ms Koskela said.

"Right now the families of Tegan, Ben, Michael and Kylie need the support of communities near and far, and the last thing they want to hear is criticism about what caused the accident."