I have to ak what you mean by "peers"? If you are talking same age, then some social "problems" you are seeing might really just be poor fit. As dd's developmetal psy said about her age mayes "0f course the kids don't fit her! How could they? She has nothing in common with them but age!" this was when she was almost 4, but he went on to say that it is like putting a 2nd grader in with a class of preschoolers all day and expecting that child to make friends. It's not goingbto happen.
Now should a gifted child be expected to be kind, considerate, and respectfful to their age peers... Absolutly! But if expecting socially for them to thrive in a seeting like I described is in my opinon, not fair. If in an appropriate setting the child still struggles, I would look at 2e issues. Just my 2 cents.
