If you fully understand the laws governing SCI, you would understand that she was made aware for each SCI code word and informed exactly what type of information fell into which category. This means that Humint agents fall under a specific compartmentalized area and regardless of what the information is it is classified and known to be classified. That it hasn't been marked classified yet doesn't change that she knew it was classified. She may have questions as to what level of classification, but would know it fell into at the very least the Confidential category.
Any person who has undergone even just one of these briefings knows for a fact that if they let out information within their particular SCI clearances with this excuse they'd be in Leavenworth for a long time.
There is nobody, according to HillBillary herself, that is "too big to jail". She broke the laws, Jarod.