There are two scenarios where she still might be indicted:
There may be a third way
Is it possible the FBI could charge her with a crime at a State level not a Federal level?
The 4th way:
Simply hold a press conference and and say “If Hillary Clintbitch were not a high demonratic official she’d have already been in jail. The evidence is overwhelming. This is a slam dunk case. For Obama to instruct the AG to not indite should be grounds for impeachment.”
I doubt that either of those would happen
I don’t think 3 and 4 are even plausible, and 1 is admittedly remote. 2 is still the only likely way I can see it happening.