"Bibi and the baby, yet to be named, will spend the next two weeks bonding behind the scenes," zoo officials said.
Cincinnati Bengals defensive end Sam Hubbard said his team's run to the championship is in memory of the gorilla.
The city's police department said that the primates were spotted at a cemetery on Wednesday evening.
"Screaming, adoring fans make her very happy," Christina Gorsuch, the curator of mammals at the Cincinnati Zoo & Botanical Garden, told Newsweek.
The 17-year-old gorilla was killed by zoo staff after a young child fell into his enclosure.
Prosecutor says same thing could have happened to "even the most attentive parent."
Outrage over the killing of the Western lowland silverback sparked criticism of both the zoo and the parents of a child who fell into the gorilla's enclosure.
The Cincinnati Zoo is just awaiting final approval from U.S. Fish and Wildlife.