/ deltarune spoilers
This is not a happy ending, it's not a good thing. She's sleeping on the floor of a supply closet eating make-believe food and talking to objects. The dark world isn't real, her castle room isn't real, and she's neglecting reality for the dark world.
99% of deltarune fans do not understand anything, its sad that such a well written story is now being hated just because most of the "fans" do not understand a single thing about story and character writing
When your life is crumbling around you, yo dad was taken to hell, your best friend is deep in her delusions and you got satan on your whatsapp and the only thing you can do now is walk