post-Act 7 headcanon time:

If not all the ghosts, the whole Game Over!Timeline made it in the new world, as long as the beforian alpha timeline. That means that 2 very much alike Terezi are running around being very much alive, both with their respective h8ge 8itch girlfriend/moirail. Though GO!Terezi either chose to go blind again or she is cursed to keep her sight, it doesn’t change that someone not from either TZ’s timeline nor one of their close friends would not be able to tell them apart. Both use it to their advantage as they love to mess with other peoples minds and even pretend to be the other to people from their own timeline. They never do it with the Vriskas/whoever you red-ship TZ with though, knowing that messing with someone else’s -even alternate yous- quadrants is never good. It is overall harmless fun except with the Egbert who at first was hella confused from all the messing with his brain and the alternates TZs (wait, if you’re TZ and she’s TZ and I’m TZs kismessis then who’s flying the plane??) but then got used to it and decided to play with it too. He then proceeds to black-flirt prank them even further.