Can you please link to the indictment you saw (which the grand jury also saw and true billed)? I couldn't find it with a quick glance at the Comal County Court at Law Portal (I only found a Register of Actions).
I'm only referring to this article where they make that claim and a brief google of other news articles where they make the same claim. It's quite possible the journalists have all made factual errors - I can't find the indictment either but I just assumed indictments aren't usually public.