Did Bachmann leak classified info, and if so, what can happen?

Factual Questions
1

Bachmann mentions some attacks on Pakistani nuclear sites, maybe.

If she did, in fact, disclose classified information, is that illegal, or would they merely sanction her in Congress somehow?

Thanks,
Rob

2

The Atlantic claims she may have heard about the attacks by reading this months cover story in… The Atlantic.

3

Be that as it may, if she did disclose classified info, what would they do to her?

Rob