The media will run with any leaks, I expect. They're not covering for her any more on this, it seems.
Supposing that she doesn't answer and it does leak (as I would be willing to bet that it does). Might that
increase the likelihood of an indictment? The political calculations surrounding this are enormously complicated, as they have a direct bearing on the November election.
As for the media... they're still covering for her. If any presumptive Republican nominee were taken in for questioning on a serious criminal matter of this sort, that's all we'd be hearing about.
For Clinton, however, the story is coming in dribs and drabs, and always portrayed with a strong political backdrop, as if none of this would be an issue except for those darned Republicans. For all her obvious flaws, she is still the best fit for the prevailing "progressive" narrative, and the media are far more interested in promoting that, than in any minor issues related to corruption or felonious activity.