@EsserWarrior thank you, if it helps she was in the group with Rubani and Lola. I'm not sure if the groups are swapped around or if they are always in the same groups?
This is definitely Lina. She was born 28 July 1985 at San Diego Zoo. Her father Vernon passed away late last year at Cincinnati.
I believe there was a 'plan' to mix the groups to see if Louisoko and/or Lucuma could become the new breeding male. If the groups remained the same from September 2021 then it is fairly safe to assume that Cheka's baby Upendi is Keke's (they were in Diatou's group). Lina's group had her 3 sons and Lopori spent a lot of her time playing with Rubani and also trying to attract Lucuma's attention, although he, and Louisoko, were more interested in Likemba (despite her having Lola with her).