I think if Kamili is to remain at Taronga Zoo, they should not hold back breeding her again. Especially considering her encouraging behaivour towards the latest infants, which was not seen in the past. Five years ago, Taronga commented Kamili was generally intolerant of infants but got on well with Shikamoo (then a juvenile).
I think the best course of action would be to identify a surrogate in the troop, and place Kamili (heavily pregnant) in a separate area alongside the troop with the chosen surrogate/surrogates and Shikamoo and Sule (both who get on well with Kamili and have displayed strong paternal behaivour towards Fumo etc.). The most likely course of action would be Kamili giving birth and rejecting the baby, which would then be investigated and hopefully protected by Shikamoo and Sule. Ideally the surrogate would then step in and take over the raising of the baby. If the surrogate was lactating, all well and good, but if not then the surrogate could be trained to present the baby for bottle feeding at the mesh, as has been done at over facilities.
This course of action should not be dismissed without trialling it. Kamili has given birth three times. It is suggested the first offspring was killed, either by Shiba or Koko, so these two should be removed from the equation and dismissed as surrogates. Her second offspring was stillborn, and her third birth suffered interference from Koko again, so the introduction of a surrogate has not been possible so far. It is not unheard of in chimpanzees, as seen recently at Monarto Zoo.