Red told the little girl, the nosy one, that her cloak was dyed with the blood of cheeky little girls. Her companions laughed, or got as close as they could to laughing in the presence of an apparent psychopath,
Red is glad they laughed.
It means they didn't think she was serious. It means they won't press for details. It means she will be left alone, thank god for peace and quiet.
Red says she does not believe in God. She does not thank him for peace and quiet.
Sometimes, in the night, when it's all dark and there is nothing but guilt left, she curses him for it.