Final answer:
The information provided is about Nella Larsen, not Denise McNair, describing Larsen's background with an immigrant mother and Caribbean father, her mixed-race experience, and her professional and literary achievements.
Step-by-step explanation:
Denise McNair is not the subject of the provided information, but rather Nella Larsen, a writer of the Harlem Renaissance period. The description given appears to be a mix-up with the provided reference information. Larsen was the daughter of an immigrant mother and a Caribbean father. Her father abandoned the family, and her mother later remarried a Dane, making Larsen the only black member of a predominantly white household. She attended separate schools from her white half-sister and lived for some time in Denmark with her white relatives. As an adult, Larsen left Chicago to enroll in a racially segregated high school associated with Fisk University. She later became the head nurse of the Tuskegee Institute's School of Nursing. In her work, such as in her novel Quicksand, she expressed her critical views on the limiting mission and culture of black institutions of her time.