Maybe she leaves to Coruscant after the battle. Maybe she’s requested for an emergency session of the Imperial Senate where some good old Emperor decides that due to the Empire being attacked it is about time to dissolve the Congress. Maybe.
The Emperor dissolved the Senate before the attack on the Death Star.
I said attack on the Empire, not on the Death Star. And by that I mean the events and battles that are to be shown precisely in Rogue One. The stealing of the Death Star Plans is to be the first major operation by the Rebels, the moment they go out of their cover.
And if you are a good politician, you would take this massive intelligence breakthrough as a good chance to finally get rid of the opposition…
After all we have seen in the trailer some military movement that can justify the word attack…specially coming from someone who has been able to justify a dictatorship out of events that didn’t at all happen.