Gaku is on some real shit, there's nothing in this setting that can even come close to disrupting her from achieving ANYTHING at this point.
An infinite number of parallel realities that each are equally real and share information between each other. If she were able to properly process all of this information at once there would be nothing that she could not do. Even finding a version of herself that observes the world around her as Yukari does, and thus mainlining that ability, would be completely simple.
Hell, if she spent a couple hours she could literally dismantle Jaunt via forum posts and messages in bottles, leading to each of the founders dying in increasingly comedic slapstick manners, simply because infinite worlds would necessarily include such possibilities.
The only reason why she's not some sort of goddess yet is because she simply hasn't imagined a reality in which such a thing is achievable, thereby connecting to it.