I am absolutely charmed & amazed by this young one! There are several people in my life who I believe could use a small lecture on "youfish, selfish, and bothfish".
My immediate reaction (after hearing the truth of what she said) was to think her order was wrong. That one ad to learn to be selfish, then youfish, then bothfish, but, on reflection, I found that selfish was much more difficult for me than youfish and I was actually quite youfish before I learned to be selfish.
I have a friend who runs a Non-Profit Theater Company for Children and we recently discussed exactly this concept---without this perfect terminology. I think that our discussion would have gone better had we known or discovered these words.
I will be adding these words to my lexicon.