Hi Nonbinary_Russian_Owl_Gummyworm
The eight year old girl you're talking about might be a girl who is accustomed to receiving a lot of attention... like the youngest sibling in the family. If not, she is definitely egocentric and worse if she is narcissistic.
If the first then she could be helped by lightly nudging her to see things from the other perspectives; persons and causes that draws her attention from herself to another person. If she is wondering what people think of her, tell her this:
"Ask your friends, acquaintances, family members to honestly give you what they think of you, both good and bad. If one person tells you that you are (Fill-in-the-blank), you can take it as just someone's opinion of you. But if the second person tells you that, think about it. However, if a third or more person then it is likely that you are such a person".
Caption this Meme