Tiahleigh lived with the family for 10 months before her murder, and her body was found on the banks of the Pimpama River in Queensland a week after she went missing, on November 6, 2015.
Julene and Josh will also provide evidence for the prosecution.
“Albeit late, they are now giving their complete co-operation to the police investigations,” Mr Jacobson revealed in October, according to The Guardian.
“They’ve now taken the step of being prosecution witnesses to give evidence about everything they know, so you can take it from that that theirs very much is a family divided.”
