She would be like that in the wild. She wouldn't have a means of commuicating her emotions, however. Raw emotions cannot be learned, but what situations spark what emotions can be. For example, a Western person would be upset by the death of a close relative, but there are several cultures where an individual's death is celebrated. This is the result of enculturation. Every human has the capacity to be sad, happy, angry, etc., but our culture determines in what situations we feel these emotions. This is a hard fact of social science. So even if it were human influence on koko that made her emote towards her kitten, that fact would be irrelevant. You CANNOT "teach" a being to have emotion. You can only teach them when a particular emotion is appropriate. In other words, even if koko was enculturated, the raw ability to experience emotion was always there. You might also want to consider that emotions are caused by chemical reactions in the brain, usually the same chemicals that make our brains work in the first place. If something has a brain, you can be guaranteed that it has neurotransmitters. If it has neurotransmitters, you can be guaranteed that their levels fluctuate from time to time. This fluctuation is called emotion. Oh, also, I'm not sure exactly what type of primate koko is. I know that she is not a monkey, I was just using that term generically. Apes are very close to us, but I understand that chimpanzees are closer. The average chimpanzee has the mental abilities of a 3 year old human. We also share 97% genetic similarity with them. I think koko is a chimp, but I'm not sure.