Hi Jeni! Welcome!
comments like "pretty" are the reason why I like to see gifted kids get individual IQ tests, such as SB-V, are as many grade skips as they need to be actually academically challenged in school, not just "able to not act out."
Think about it - how would you like to spend hours a day with someone who "expected" you to be "pretty and sweet" - I wouldn't like it at all! I think at age 8 one is young enough that a skipped year doesn't mean that a lot of skills are being missed. The longer you wait, the harder it is to make new friends and to "catch up" with the missed work. The whole question is "is a grade skip actually needed by this individual child?"
If you aren't sure about individual testing, try Deb Ruf's book: Losing our minds, gifted children left behind. It's a good introduction to the range of giftedness.
Welcome, again,
Trinity