very badly behaved ped client

I'm a nursing student, and I'm probably not going into peds. I have to write a journal entry about my experience in hem-onc last week, and I'm not sure if this is beyond my scope of duties or not . .

So I had this preschooler who had cancer. She had been very sick but was getting better, although she had a long road ahead of her. I felt sorry for her and her family-- I can't imagine how tough it must be. BUT this child was so incredibly rude, demanding, disruptive, and contrary. She would order everyone around and you could tell she enjoyed it-- it was not just that she didn't know about good manners. She growled at people if they tried to say something nice to her. She purposely ignored people. When a doctor was talking to the dad about some important info, she started calling to her dad because he was not for the moment focused on her. Totally normal preschool behavior. Dad said just a minute to her, and turned back to the doctor. She started calling "Hey!" to the doctor and he said let me talk to dad for a minute. She kept saying Hey, and then started throwing candy at him! And hit him in the belly a few times! Dad did nothing about it. Nurses tried to distract her but they were busy hanging a blood product. When nurses tried to assess her she would be very rude, complain about cold hands, etc. but then 2 minutes later would ask for an ice pack.

I know she's sick and all, but is it too much to ask for good manners? As a nurse is there much I can do or is this out of my scope of practice. I know if an adult treated me like this I would be having a nice talk with them about how I'm trying to help them, and would appreciate some respect (in a tactful way) because nurses should not take abuse from clients. But what about a child?