Sleep Well, Your Highness...

This is a mockup of a fanmade Sally.EXE Cover Story ending, based on the final battle and ending for Sonic.EXE: Fall of the Angels by Rexer061 (Executor vs. Akrasiel). In this universe, beforehand, Amy and Cream, as well as Exetior's Tails and Knuckles, were erased by the Highests, as well as 75% of Exetior's forces. But the war turned in Exetior's favor as he destroyed Allfather, making the last few Highests, including Stitch-Lite, completely vulnerable. And, well, the dialogue below shows how it panned out: 

Stitch-Lite: AAAAAAAAGH!!! YOU LITTLE-!!!
Semi-true Exetior: It's time to finish this! Allfather is gone, and you're about to join him!
Stitch-Lite: This can't be true! I am a Highest! A mere demon, let alone an arch-demon, can't kill me?!
Semi-true Exetior: In the end, looks like you Highests and the worst of demons aren't so different after all.
Stitch-Lite: GGGGGGGGRRRRRRGGH!!! EXETIOOOOOOOOOOOORRRR!!!
(Stitch-Lite goes in for one last hit but Exetior goes for the killing blow and smashes Sally's Mobian body through the chest.)
Semi-true Exetior: Sleep well, your highness...
(Stitch-Lite's Sally body begins exploding into a huge pile of blood as she screams her final scream, and it all goes white...)

Afterward is a cutscene like in Kostas's Exetior vs. Junter animation, the whole "nothing but the sound of silence" thing. youtu.be/O2ApRE7RyqU?t=2319

Credit goes to SonicDash57, Damien, SkyLights, Stydex786, WarchieUnited, and anyone else I forgot for the sprites. 

Sonic (C) SEGA and Sonic Team
Sonic.exe (C) ASTRANOMICONX
Exetior, Sonic.exe Nightmare Saga (C) JaizKoys 
Sonic.exe Blood Ring Saga (C) Rexer061
EXE Shared Universe (C) Me