Family members said she had been working as a sales representative at Macy's in Oklahoma City and living with Craig Prom, Donavon's father. Relatives said Jackson left her home Jan. 2, and Prom found a note saying she needed space.
She went to an aunt's home in East St. Louis, Ill., last Thursday, but no one was home. She visited a neighbor, leaving about 10 p.m. after saying she needed to find a place to stay for the night.
She then called a family member saying she would be by with the baby on Friday. That was the last time relatives heard from her.
Linda Lawson, a family spokeswoman, issued a statement describing the family's “unimaginable heartache.
“Someone out there knows what soulless people did this: Please come forward to let us know before it's your loved one,” the statement said.