Okay, this is what I am led to believe; as an unreal game, the actual game is encryped by the creator, meaning you can't physically alter the game's translation, however
Hakuowlo's post shows a potential solution to translate the game.
IF the game isn't encrypted, you need to unpack the files in the Game\StoryFramework\Content\Paks folder, translate the text, then re pack them. This is WAY outside of my ability I'm afraid, but there are unpacking and repacking tools available for those brave/foolish enough to try