Ep.9: Rebel Base #1. This is the rebels' first base when Amber and the Gaians have decided to join the Cause. After Dal dies, In Ep.12 Amber leaves for the Southern Province in order to recruit more people.
Rebel Base #2: In Ep.13 The Rebels believe it is only a matter of time before the Chosen track them down so they move to an old race course well outside the City. Rebel Base #3: But as of Ep.25 they are here, a boat house, and without any explanation.
In Ep.28 Amber and Trudy return to rebel base #3

So how did she know where to find Bray and the Rebels? How did she know not to go back to the first base - the one she left?