So in that regard, we can speculate Chrysalis somehow prevented the other photographer from coming.
To be fair, only Twilight actually knew Cadance personally out of the Mane 6 and Shining Armor was being hypnotized into submission.
Changelings have been shown to turn into “original” ponies numerous times, like with Thorax or Ocellus. Also, the ladybug cutie mark and that pony’s eye color does seem to imply that that pony is a creation of Chrysalis herself and doesn’t really exist.
I wonder if there was a real photographer and what Chrysalis did to her.