First off, I'd have to go back to the OPS criminal investigation, and to whatever evidence was taken to the crown attorney, who felt there was not enough evidence to lay criminal charges.
As for the internal aspect, one of the things about dealing with internal investigations is that it depends on who knew what at what particular time, and then the clock starts running, which is different from the way things work with criminal charges. So once somebody in authority might have known what transpired, or should have known, they would have one year to lay charges under the RCMP Act. It's very restrictive. You've got a one-year window.
I cannot speak to who knew what at what particular time, with regard to the internals. The only thing I can tell you is that there was reason, if those time limits had not been exploded, to be able to lay charges under the RCMP Act.