Incorrect, he actually snaps her neck off screen, they just decided not to show it because they wanted the game to have a T rating. You can actually still find the sound effect of Six's neck snapping in the gamefiles.
My boss guesses for little nightmares 3 (rather there will be a little nightmares 3 or not) Mono (as the thin man) The exterminator The librarian The puppet master The ringleader The magician (main antagonist and final boss of little nightmares 3)
My Boss idea in Little Nightmares 3 1) Mono (The Thin Man) #1 2) The Police Officer 3) The Soldier 4) The Ninja 5) The Fire Fighters 6) The Construction Workers 7) The Pirate 8) The Terroris 9) The Miners 10) The Astronauts 11) The Robot (Terminator Reference) 12) The Puppet 13) The Knight 14) The Mafia 15) Mono (The Thin Man) #2/Six (The Lady) (Final Boss)
Little nightmares 3 boss ideas: Huggy wuggy Baby long legs Bunzo bunny Whack a wuggy Pj pug a pillar Mommy long legs Kissy missy Bron Boogie bot Killy Willy Daddy long legs Silly billy Rainbow huggy wuggy Prototype Boxy Boo Granny long legs Elliot Ludwig