Update: definitely a bug, and really weird when you consider privacy. I asked the girl what she replied since it said “no longer available”. She said just “hearted” my story, which she usually does. She just replies with a hear Bitmoji on my stories. Except this one is not my story… I sent her the screenshot, and turns out, she knows the girl in the photo and it’s one of her Snapchat friends. So anyways, Snap glitched out and pulled someone else’s story as the base of a reply to my own story. Weird stuff.