I see no reason the NCAA should have any involvement, regardless of the student being an athlete. In addition, there's been no disclosure of the academic fraud involving other athletes, just that she might have had inappropriate relationships with them as well. If she was simply sleeping with the other athletes for the hell of it, then the NCAA would be creating their areas of jurisdiction as they go IMO.
This should be a university issue and nothing more. If its John Doe the literature major she's sleeping with and she's caught covering up plagiarism, she's fired, he's expelled and its case closed. Golden should be treated as any other student in this situation, unless she explicitly says she slept with him to keep him eligible as an athlete then the NCAA can't infer that their relationship was anything more than a sexual one between a student and university employee.
If they get involved and rule it as a lack of IC they're overstepping their boundaries, just like they did with PSU. Sandusky is scum and deserves hellfire for eternity, and the AD and prez deserved their firing but I still fail to see how that issue involved the NCAA in any capacity and their ability to dole out punishment.