You've received great advice above. I'll just add that reading books about similar situations can provide bibliotherapy, helping a child see their situation within the pages of a book they are reading. Kids may find circumstances which parallel their own life and develop the specialized vocabulary to describe nuanced feelings.
Gifted Kids' Survival Guide for gifted kids under age 10 is one idea.
Hoagies Gifted Education Page has a great
reading list.
Some of my best friends are books is a helpful guide.
