Nightingale is a fictional superhero

Superhero

A superhero is a type of stock character, possessing "extraordinary or superhuman powers", dedicated to protecting the public. Since the debut of the prototypical superhero Superman in 1938, stories of superheroes — ranging from brief episodic adventures to continuing years-long sagas —...

 from Marvel Comics

Marvel Comics

Marvel Worldwide, Inc., commonly referred to as Marvel Comics and formerly Marvel Publishing, Inc. and Marvel Comics Group, is an American company that publishes comic books and related media...

, who first appeared in Marvel: The Lost Generation

Marvel: The Lost Generation

Marvel: The Lost Generation is a twelve-issue comic book limited series published by Marvel Comics in 2000 and 2001. The series was written by Roger Stern and drawn by John Byrne. Numbered in reverse order, it began with issue #12 and finished with issue #1 Marvel: The Lost Generation is a...

# 12.

Nightingale was a founding member of the First Line

First Line (comics)

The First Line was a fictional team of superheroes and adventurers from the Marvel Comics series Marvel: The Lost Generation. Essentially a retcon to fill the gaps caused by Marvel's "sliding timescale", in which the emergence of major superheroes and events was only supposed to have occurred...

, joining at the request of the Yankee Clipper. Her origin is unknown, but she is apparently Caribbean

Caribbean

The Caribbean is a crescent-shaped group of islands more than 2,000 miles long separating the Gulf of Mexico and the Caribbean Sea, to the west and south, from the Atlantic Ocean, to the east and north...

.

Powers and abilities

Nightingale has the power to sense emotions

Empathy

Empathy is the capacity to recognize and, to some extent, share feelings that are being experienced by another sapient or semi-sapient being. Someone may need to have a certain amount of empathy before they are able to feel compassion. The English word was coined in 1909 by E.B...

 and life-forces and to heal the injuries of others. However, her abilities can be "overloaded" if she is in proximity to too much death at once. She also apparently has some psychic

Psychic

A psychic is a person who professes an ability to perceive information hidden from the normal senses through extrasensory perception , or is said by others to have such abilities. It is also used to describe theatrical performers who use techniques such as prestidigitation, cold reading, and hot...

 abilities which give her premonitions of future events.

Death

Nightingale died during the first attempted Skrull invasion of Earth. Her healing and empathic powers were overloaded by the amount of death surrounding her, resulting in her own death.