Sasha's death must have been horrible, because it set a before and after in the perception that the Argleton player should have, It's not gore, just for the sake of being gore
Sasha's story speaks of determinism, and she sacrificed everything to generate change, but she needs Lucky to do his part. She has been preparing you for this moment. She knows what she was going to Argleton for. She is a Supernova and has seen much more than us, because she believes in second chances.
If you're expecting a game like Doki Doki, you won't find it here, I'm looking for an experience closer to the Mother games (although more explicit), but Gretel breaks the fourth wall, because she's above the game, she's Gretel, and we're Hansel, the girls are the sweets and the witch... You have to deduce that for yourselves
The foundations of Argleton are dark, they always have been, it wasn't an unexpected change, it was just more... visceral with this death, and on that basis it became a perfect place, for Winsor, for Lucky and for the Player, a house full of sweets to enjoy.
You're free to enjoy those sweets, that's the idea. The witch wants you to gain weight. But those sweets have souls and feelings, but... are you interested in their well-being? Or do you just want those sweets to eat?
That's where the player must choose, Sasha already chose her path, and it was to trust and break that destiny, that dark cycle bathed in sugar
Each main story deals with a specific theme Sasha is Destiny, Prim is Hope, Maxy is Passion, etc... and it all comes together in Argleton, we are in the final third of Lucky Paradox
And yes, there will be multiple endings, none of which are good or bad, it's up to the player to choose that
tl;dr: skip this wall text, play the game and have fun xD