The bean-nighe is a female spirit in which country's folklore?
The bean-nighe is a female spirit in Scottish folklore, regarded as an omen of death and a messenger from the Otherworld. She is said to haunt desolate streams and washes the clothing of those about to die. She is related to the Irish banshee and is seen wandering near streams and pools where she washes the bloodstained clothes of those who are about to die. As such she is seen as an omen of death just like the banshee. The legend has it that the bean-nighe is the spirit of a woman who has died in childbirth and is cursed to carry out her role until the day her life would have normally ended.
The bean-nighe is sometimes said to sing a mournful dirge as she washes the clothing of someone who is about to meet a sudden death by violence. She is often so absorbed in her washing and singing that she can sometimes be captured. If a person can seize hold of her after a stealthy approach then she will reveal who is about to die and will also grant three wishes. Hence, when a man would be successful in his work of some phase of his life the people would often say “Mary! The man got the better of the nigheag and she gave him his three choose desires.” She is sometimes described as having various physical defects including having only one nostril, a large protruding front tooth, or red webbed feet.
More Info:
en.wikipedia.org