So sorry you and your family are going through this.
In regards to obtaining a court transcipt I think you need to be a party to the proceedings ie in your case your Fil, his legal team and the prosecution because you need to provide case numbers and other details. It is also very expensive as well as they charge by the folio which contains a certian amount of pages and if it was a lengthy trial the number of folios would be alot. If you google the court in your state it will have the website that you use to order transcripts from. Hope this helps a little.