//------------------------------//
// Exit 
// Story: Dimension G4.5 
// by _Undefined_ 
//------------------------------//

As Twilight Sparkle emerged from the mirror, she stumbled over her longer forelegs and wound up performing a rag doll–like somersault into the room, ending up on her back.

“Of course,” she said to the ceiling.

Starlight stepped over and looked straight down at her. “How was it?” she asked. “Weird, right?”

Twilight got back up onto her hooves. “Starlight, how many other ponies know about this mirror?”

Starlight paused for just a moment before answering. “Just you and me,” she said. “I haven’t told anypony else about this mirror yet.”

“Good.” She glanced over at it. “Here’s what I’m going to do. I am going to take this mirror and encase it in a half-meter-thick block of concrete. Then I’m going to cast a spell of undetectability on it and drop it in the fifth-deepest part of the ocean so that nopony will step through it ever again.”

Starlight’s eyebrows went up. “Isn’t that a little… extreme? I know that that new dimension is unsettling, but are you that sure you want to prevent any other ponies in this dimension from ever experiencing it?”

“It’s for their own well-being. Trying to make sense of that world results only in madness.”

With no further discussion, Twilight teleported out of the room.

Leaving behind the pony who had the knowledge to create the portal in the first place.

Starlight looked at the mirror, then shrugged. “She doesn’t need to know about the two-year deal I already signed with the Hass Brothers,” she said.

After all, toy and media franchises were profitable and the content had to come from somewhere.