Learning to respect others is important, and your DD was being disrespectful. True, she was disrespectful in a small way, but the punishment was also small. Yet was apparently enough to get her attention if she saw fit to tell you about it. Personally, I think this is a good lesson.
I agree, and this might seal the deal for you:
Fast forward to her mid 40s, and pretend that she's my husband. Last year he was suspended without pay for 2 weeks because he said something rude in a company meeting. There was a guest speaker who complained about him, thinking the rude comment was directed at her (it wasn't and he had coworkers speak up in his defense, but he was still suspended). He was quick to play the victim "I was misunderstood" and I was quick to come back with "oh boo hoo. If you'd only kept your mouth shut and acted like a professional, you wouldn't be in this mess."
Gifted kids are not exempt from learning respect and proper behaviour...
