On earth, we call this racist behaviour, dear Vulcan Director. You must have great fear of human nature.

S: Acceptance with honors is her due. 
D: By conventional decision parameters, yes. 
S: Your hesitation is to do with her nature?
D: Certainly, her nurture is unquestionable.
S: I have created in her a being of exquisite logic to rival the best of our species.
D: An accomplishment you have achieved not once but twice. Your ward, Michael, and your son, Spock.
S: What has my son to do with this situation? He has not yet begun his studies at the Science Academy.
D: Upon completion, he will apply to the Vulcan Expeditionary Group, and then there will be not one but two non-Vulcans in its ranks.
S: Spock is - Half-Vulcan.
D: Another of your experiments.