"Oh dear, oh dear!" panicked Twilight. She had stayed up all night trying to find an explanation for the Princess about what happened. Pinkie Pie had opted to stay and help her find something. All she had found so far was teleportation from one side of the planet to the other, nothing about world crossings or anything of the sort. In all of pony history, there was nothing about world crossings involved. The only remote thing she found about the world crossings was something about time shifting and time convergence, but as far as she was concerned that didn't matter at the moment. She was poring over a glossary of a book when there was a knock at the door. "Pinkie, could you answer that?" asked a twitching Twilight.
Pinkie nodded her head ferociously, and bounced over to the door. She opened to see the Princess and Dashie. "Dashie!" yelled Pinkie, who proceeded to tackle her best friend. She was greeted by a shove.
"I don't know who you are, so BACK OFF!" yelled Dash, tears in her eyes. Pinkie's poofy pink hair deflated, just like last time. "What happened? Princess, why doesn't she remember me?" Pinkie whimpered.
"I don't know Pinkie Pie, that's what I have come here to find out, may we come in?" Celestia asked politely.
"Oh, sure, come on in." Pinkie had said, back to her cheery self in no time.
"Twilight Sparkle, my pupil. What have you discovered in your studies? We may have a problem." Celestia asked her student. Twilight hung her head low in shame.
"I haven't found anything about worlds crossing over. The closest thing I found was that one pony had perfected teleportation and had gone from one side of the world to the other, but that was it. I'm sorry Princess, I let you down. What's wrong with Rainbow Dash?" she questioned, still hanging her head.
"Let us worry about your investigation later; for now, Rainbow Dash's memories are still about the man from the other world. It seems that the memory spell used on her was ineffective. What do you have to say?" Celestia asked.
At the sound of this, Twilight picked her head up immediately, concerned. She thought she did it exactly the same as she had done it during the Discord incident. "I dunno, should I try again?" she asked her mentor. Celestia nodded, and walked over and held Rainbow Dash. "Hold still, please." Twilight was about to lower her horn to Dash's head again, but this time Rainbow jumped away.
"Oh, no, not this time, the last time this happened you ruined my life! I'm not going to let you do that again!" yelled a furious Rainbow Dash. She squirmed out of the hold of Princess Celestia, and soared through an open window. She quickly glanced around, looking for somewhere to hide. She saw a forest not far off, and with memories of Daddy, she bolted toward it, hoping that he would be under one of trees like he was that one day long ago.
"Why doesn't Rainbow remember us? And why does she still remember that man?" bounced Pinkie. "I thought when you used that memory spell it would replace anything that happened before?" She was bouncing around the room, looking through Twilight's books.
"I don't know, Pinkie, I thought the same thing. I still feel bad about the first time, but after I saw how scared she was this time, I just wanted to help. Now she is off in the Ever Free Forest." Twilight let out a sigh of fatigue. She had been up for almost 24 hours, trying to find out what had happened to Rainbow when she had gone to the different world, and now discover what had happened with her memory spell. Princess Celestia had gone back to Canterlot to talk to her unicorn advisers to see what they could figure out. Applejack, Rarity, and Fluttershy were out in the forest looking for Rainbow Dash. Pinkie had opted to stay behind and help Twilight, much to the dismay of Fluttershy. "Gah, this is useless. There is nothing about world teleportation or memory prevention!" She had started skulking around the room in self-pity when Pinkie threw a book at her.
"How about this one? It's called, 'The Effects of Teleportation on Memory,' that sounds promising!" said an ecstatic Pinkie Pie. Twilight just shook her head in awe.