If she were hit by another car, then that person's insurance would take care of her, but apparently this is not the case. I assume then that the person who she was riding the bike with wrecked it on their own accord. While they should man up and help her out, its still her fault for getting on something without making sure that things will be taken care of if anything were to go wrong.
And what's her mom doing letting her fuck around with bikers at the age of 16??? We're fucking crazy... we shouldn't be let around stupid, trashy, young girls!