"I want to know what really happened to my baby, you know. I really want to know," Monge said.
The baby died Monday night after being rushed to the hospital from her foster mother's Steuben Street home on Staten Island.
Sources now tell Eyewitness News the baby had a 105-degree fever and marks consistent with past trauma. The medical examiner says results of an autopsy are inconclusive, pending further study.
"Our kids were never neglected. They were never abused," Nicole Fair, her mother, said.
The baby's biological parents insist the only reason Genesis and her older sister, 2-year-old Novella, were in foster care is because of the couple's constant fighting. And they'd begged to have the children placed with relatives.
"I want somebody to pay for this. If my kids would have been with their grandparents, none of this would have happened," Fair said.
Novella has been removed from the foster home and is in the custody of the Administration of Children's Services, which has not responded to our request for comment.
Meanwhile, detectives were back at the home trying to piece together exactly what happened.
"To be honest, I want my daughter back. I can't have her back," Monge said.
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