In this case it looks like she may have lived with the monkeys from infancy until she was 11 or 12. I find this sorry very fascinating because and gives us a window into her behavior is socialized. It also shows how we can survive in varying conditions that are quite foreign to what we know. More here
It seems that when she was discovered the Monkees she was living with her surrounded her for protection. she also would throw food on the ground and then eat it with her mouth. Now she is learning to communicate with gestures and sometimes smiles.