Given that phone records, hospital reports and school reports are being subpeoned I'd say Brett's Legal eagles are looking pretty good.
Phone records will show who they called and when, hopefully it will show calls being made to other parties before 000 or Dee Why Police.
Hospital records - if they don't have them already I would say there is nothing in them to suggest assault took place or if they did they would already be part of the police brief of evidence, including statements from treating Dr/nurses, one would think anyway..
Reports have been subpeoned from three northern beaches schools, could be nothnig but could go to discredited the alleged victim if there is shown to be some sought of behaviour.
From reading the paper reports (which mean stuff all I know) it looks like the defence is subpeonering this info so maybe the brief is not that crash hot as far as evidence goes.