For the most part, she hasn't been all that critical of the prosecutor and the investigation.
I believe her threat of "go to the media" means she will start opening up about all of the deficiencies in the investigation that she has been privy to that may not be widely known yet.
I think it also means that she will be more forthcoming about her meeting with PVDS and others. It's apparent that she's in withholding mode on many details perhaps in compliance with Aruban investigators.