Ochoa-Lopez disappeared in April, and was later found murdered, the baby cut from her womb.
The newborn, named Yovanny Yadiel Lopez, was on life support since the grisly April incident that left him with severe brain damage.
Police have said Ochoa-Lopez, a high school student, went to Figueroa's home at least twice this year after connecting on a Facebook group for mothers, where the teen accepted Figueroa's offer of baby items.
"Please keep his family in your thoughts & prayers as they go through this hard time", she added.
Prosecutors say 46-year-old Clarisa Figueroa claimed she had given birth to the baby when she took him to a hospital.
The baby was on life support but his condition rapidly deteriorated. Clarisa Figueroa's boyfriend, Piotr Bobak, 40, was indicted on a charge of concealing a homicide, WLS said.
After hearing the testimony, Ortiz denied bond to the Figueroas, who are charged with murder, saying she felt "the presumption is great" that they committed a "heinous and brutal murder" and that they pose "a real and present" danger to the community.
Desiree Figueroa distracted Ochoa-Lopez with a photo album while the elder Figueroa wrapped a cable around Ochoa-Lopez's neck, assistant state's attorney James Murphy said.
"I would like to offer my honest condolences and prayers to Marlen's family, who instead of celebrating the arrival of a new life into their family, are now mourning Marlen's loss, while at the same time caring for a new little baby that's in grave condition".
All three are set to be arraigned June 26, court documents show.
Authorities contend that not long after Clarisa Figueroa's adult son died of natural causes, she told her family she was pregnant.
Julie Contreras, a spokesperson for the family, posted a statement to her Facebook page revealing news of Yovanny's death.
Figueroa connected there with Ochoa-Lopez, who at that time was seven months pregnant, Murphy said.
Yovanny initially survived after his mother, 19-year-old Marlen Ochoa-Lopez, was attacked in May after being lured to a woman's home in Chicago, responding to a Facebook offer for free baby clothing.
The motive for the killing is under investigation, but Chicago police Superintendent Eddie Johnson said he believes the elder Figueroa wanted to raise the child as her own.