User blog comment:Keekian/Why did Koala join the revolutionaries??/@comment-24850639-20170307192628

Basically, what Fandom said. Only thing I would add is that the Revolutionaries realize that the WG is who is actually pulling the strings behind the Marines, and the WG is essentially controlled by the families of the CDs that formed it, albeit maybe not directly. So their target is the WG, not necessarily the Marines. Defeating the Marines, or assinating certain CD families would be treating the symptoms, and the original source, but it wouldn't stop the disease of their corrupted "justice". The WG has essentially become it's own functioning entity, with it's own goals and motives, but both the Marines and the CDs would falter without it. She had 3 years after Tiger's death to figure out her next best course of action.