She probably did inform her superiors about the message. But they would have no way to predict what would transpire from it.
The Federation and the Klingons and Romulans were all adversaries at that point, and a battle between the latter two would have no immediate bearing on the Federation. They would be watching the situation, but no one would be able to predict what happened. They don't have channels to find out more, either; at least not for a while.