When she get's to the door you could have her appear in the door light with her white glowing eyes being visible while the door light is off. Watching her on the cameras should slow her down but not completely stop her from moving to a different camera. Reborn Freddy appearing in the door should cause her to laugh a sixth time to indicate she's at the door when she moves from the East Hall corner Camera (CAM 4B) to the office . I don't know if it's a good idea to have Reborn Freddy camp the right door. Assuming Reborn Foxy is a big camera hog along with Reborn Puppet, cam stalling Reborn Freddy would be a pain and keeping the right door closed the entire night will drain a stupid amount of power. (Assuming the game has FNaF 1's power dynamic) You could have Reborn Freddy return to the dining room after she appears at the door just so that power management isn't such an issue. This is just me assuming that Reborn Foxy is a big camera hog after you said she had a different mechanic to FNaF 1 Foxy when it came to looking at any camera doesn't stop/slow down Reborn Foxy and also cause I don't know Reborn Puppet's mechanic. I hope her mechanic doesn't involve massive use of the cameras. Also, don't make you're game have really horrid RNG, cause that can kill the enjoyment. For example in FNaF 2 Toy Bonnie is a pain to deal with in later nights (Namely Golden Freddy Mode) with how he sometimes takes forever to leave the office which get you killed by the Puppet.