Folklore
Shakchunni
A female spirit of Bengal, the spirit of a married woman who died with her longing for household life unfulfilled.
Wikipedia describes the Shakchunni, in folklore, as the spirit of a married woman who died while her desires and attachment to home life were still unmet. She is portrayed as longing for marital happiness, and is said to take hold of or sway married women, especially from wealthy households, so that she can live those experiences again.
The Business Standard of Bangladesh calls her the best-known troublemaker among Bengal's spirits. It pictures her in a red or white sari with clinking bangles, enjoying mischief and carrying it off with style.
"According to folklore, a Shakchunni is the spirit of a married woman whose desires and attachments to domestic life remain unfulfilled at the time of her death. She is often portrayed as longing for marital happiness and household life, and is said to possess or influence married women, especially those from affluent households, in order to relive such experiences."
- Bhoot Chaturdoshi meets Halloween, The Business Standard (Bangladesh)