The law does not require intent. Please show me in the statute where the law requires intent. You know why it doesn't? Because we want classified information to be highly protected and we want those that possess it to know that they have to use all precaution to protect it, even if they accidentally disclose it. The law if very simply. BTW, Comey is not a prosecutor. He is a cop and it is not his job to determine guilt or innocence. That is up to the DOJ.
Comey makes recommendations to the DOJ. They can take it or leave it. Obviously, they (DOJ) have decided not to prosecute. I'm not excusing what she did. They (DOJ) know they don't have a winnable case.