My niece apparently has an issue that seems similar--reportedly she will not answer questions in class unless she is completely certain she knows the correct answer, even though when not under social pressure she can always give it. Sorry that is all I know about this, b/c it's not an issue our DD has and there is some interfamily awkardness about giftedness
But I can see for some kids that social awareness might prevent them from giving the correct answer. Not sure what category of issues this might fall into, but at least she does seem to know what the answer is
Best of luck!
