Does she do this behavior with anyone else? My Les is the most loved cockatoo...he's 17 months old, he's never in his cage, he's now flighted, he's on a very good diet, he gets constant attention, he has more toys and play areas then my human children, he's had several visits to the vet for various reasons due to my being a nervous too mom, he's spoon fed every day with warm oatmeal, sweet potatoes, and anything else, he has a wonderful disposition...but for a long time, as soon as my daughter's boyfriend would walk in the door, he'd do the same thing you're describing. Les still does it with him but very infrequently now. I believe that Les associated him with someone from his early babyhood before he came to us. We would give the friend warm food to try to feed Les during those times but he wouldn't accept any. He just would hunker down, rock, and meep. So, the friend would just sit with him and pet him or try to get him interested in an activity. Sometimes it worked, sometimes it didn't...but the behavior stopped either when the friend left or it stopped on Les's own terms. However, the behavior wasn't something we ever ignored...which may be the reason Les no longer felt the need to do this behavior. I can picture exactly what your too is doing. I would take him to the vet first just to be on the safe side and then, as much of an inconvenience as it is, I'd give into the behavior because I believe it will help your too get through it and then move on.