First of all, your assumption that she's guilty but she hid the evidence is ludicrous, the fucking FBI investigated her for 21 months. If you can't accept that she's innocent when an obviously politically motivated witch hunt carried out by her political enemies couldn't come up with one shred of evidence against her after spending hundreds of millions of dollars for almost two years you must be a paranoid lunatic.
And as far as being too aggressive in foreign policy, her opponent has called for torturing terror suspects and killing their families (both war crimes). He's also said he's in favor of bombing areas with large civilian populations and praised Ghadaffi, Putin, Kim Jong Un and Saddam Hussein.