Blessing was only six years old when her mother arranged for her to become an unpaid housemaid for a family in the Nigerian city of Abuja, on the promise they would put her through school.
In her home town in southwest Nigeria, her mother had trouble making enough money to feed her three children. But when Blessing arrived in Abuja, instead of going to school, the family worked her round-the-clock, beat her with an electrical wire if she forgot one of her chores and fed her rotten leftovers.
When her mother later moved to the city to be closer to her daughter, Blessing was unable to be alone with her when she came to visit.
“They would tell me that my mother was coming, that I should not tell her what was happening to me, that I should not even say anything,” she says of the family.
“If she asks me how am I doing I should say I am doing fine, they said.”
As the world marks 400 years since the first recorded African slaves arrived in North America, slavery remains a modern-day scourge. Over 40 million people are estimated to be trapped in forced labor, forced marriages or other forms of sexual exploitation, according to the United Nations.