Sang was born in Philadelphia, PA and grew up in the sleepy suburb of Sykesville, Maryland, the setting of her debut novel. As a child, Kromah would sit in the living room with her brother and listen to her parents recount the fairy tales of their native land of Liberia, absorbing in the words and pictures. Born a storyteller, Kromah would run away with the tales, creating her own versions of the stories for her younger brother.
While her peers were playing Super Nintendo, she was busy being "Harriet the Spy". She was first introduced to the book in the second grade, and from then on, it was her Holy Grail. She would spy on her family and neighbors, writing the things she had observed in her leather-bound journal; making comments, and notes on the subtle things they did that no one else would notice. She had the ability to pinpoint quirks that made them stand out; those little character traits that set them apart from others. And from her notes, many of her stories were born.