Children of the Night, marking its 30th anniversary this year, typically deals with children whose ages range from 11 through 17.
What makes Shaniya's case different is that she is not yet old enough to be considered to be "mobile," to run away on her own to escape a bad home life, Lee said.
When children are trafficked or pimped under the age of 11, she said, "usually the parents are involved."
Shaniya was last seen, according to police, on a surveillance camera video at a hotel in Sanford, N.C., in the arms of Mario McNeill, who was arrested Friday and charged with first-degree kidnapping. McNeill is being held on $100,000 bond.
Chance declined to comment on a possible connection between Davis and McNeill. A third man, Clarence Coe, has been arrested in the case, charged last week with kidnapping. The charges were later dropped, according to police, after interviews with McNeill.
Davis' other child, a 7-year-old boy, was removed from her home last week, Chance said, and is now in foster care.
Shaniya's father, Bradley Lockhart, told the Associated Press this weekend that the little girl, the product of a one-night stand with Davis, had lived with him until recently.
Lockhart said he decided to give Davis a chance to raise their daughter after she showed him that she was getting back on her feet financially and had her own home where Shaniya could live with her.
"I should've never let her go over there," he told the Associated Press.
The Associated Press contributed to this story.