Dear Sunset,
 
Make me.

@Backgroundpony  
Pretty sure she considers the EqG dimension her dimension since she straight up said it in Forgotten Friendship.

“Your” dimension?

“Dear Sunset,
 
Technically speaking, you’re not wrong to blame Twilight Sparkle for that, but I’m the wrong one. Don’t forget who nearly tore your universe apart. Not that I blame her for it; she wasn’t in her right mind. Also, the sirens were all Starswirl. I’m just part of the cleanup crew, same as you.
 
Your friend,  
Twilight Sparkle (Equestria)”

What does that make Sunset? Since Twilight essentially dumped her there at the end of the first movie… poor clueless Shimmy.

@Lord You Know Who  
For Cozy  

“DEAR (SO TO SPEAK) SUNSET SHIMMER:
 
THIS IS ONLY THE BEGINNING.
 
YOU THINK EVERYTHING THAT HAPPENED TO YOU SO FAR HAS BEEN A COINCIDENCE?
 
MIDNIGHT SPARKLE, GAIA EVERFREE, JUNIPER MONSTAR, THE MEMORY STONE, VIGNETTE’S CELLPHONE…I LOVE A STORY WITH SCOPE.
 
ONCE ALL THE PORTALS ARE OPEN, KING SOMBRA WILL RISE AGAIN.
 
EARTH WILL SUFFER UNSPEAKABLE HORRORS. SO WILL EQUESTRIA. AND WHEN THE DUST SETTLES, I WILL STAND VICTORIOUS, AS THE EMPRESS OF ALL FRIENDSHIP.
 
PREPARE YOURSELF. THE ENDGAME IS COMING.
 
SIGNED,
 
COZY GLOW”

DPT im just here to watch The friendship of MAGIC love sunset shimmer

Twilight: Never!

“Dear Sunset Shimmer. Is this your official Resignation of the Equestrian Citizenship? Else this is also YOUR Dimension. Love Princess Twilight Sparkle.”