Simple way to verify this: submit a FOIA request to STRATCOM, asking two questions: is the classification of the response time treated as anything other than than ‘UNCLASSIFIED’? If so, is the statement made by the former Secretary of State in a public forum accurate?
Good luck getting a response as favorable to Hillary from that.
Or you could ask them for the "official" launch response time. If they answer that this is classified information, she's guilty of broadcasting classified information to the world. If they state anything other than 4 minutes, she can be shown to once again be lying.