Keep in mind, as atrocious as this is, it only involves the non-classified documents at this point. DOJ will probably appeal, but not much can be done to stop Cannon from just doing more shit again afterward to force a 3rd appeal, etc.
At this point, I think her game is to help Trump make as much of a mess as possible of all of it and then decree that ALL of the documents are off-limits for investigation, indictments or prosecutions because of said mess rendering them too tainted, etc.