Isn’t it possible that Mothma was in the Senate when the Emperor dissolved the Senate? She may have stayed on Coruscant to plead with others to keep it intact or to join the Rebellion.

Also the small Rebellion theory, if the idea is that the entire Rebellion is like 10 ships and 150 people to go against the Galactic friggin Empire…they are braver than I thought.

They will have to do something with these characters at the end of this film. Perhaps Vader kills all of them. Perhaps they allow the 2 main leads to survive, Mon Mothma is captured and they have a sequel post ANH where these two are trying to find her.

But probably they all get slaughtered. Can’t wait.

That Rebel reading the charges sounds a lot like Agent Kallus from Rebels.