I have an issue with one of my directs regarding my inforcement of a basic company policy (such as dress code or attendance) and thier reaction to it. This direct was told that they could not do something since it was the company rule and making an exception would not be fair to the rest of the group. Since this conversation this direct, who is normally very social and jovial towards all team members, has ceased to speak to me. Although she does not react this way often this is not the first time this has happened. I have been trying to ignore it for the past few days and go about my business but her reaction continues to bother me. Specifically I am amazed at the lack of maturity that this indicates. Personally I want to tell this indiviual exactly that, that if they want to suceed in the business word, such highly imature behavior will not get you far. Unfortunately this individual, being passive agressive, usually fails to own up to any wrong doing. As her manager should I immediately confront this person asking 'what's the problem?' or should I continue to wait her out since she has the 'issue'?