No, I wouldn't think you're wrong for being frustrated. And you're right, people who don't play have a tough time appreciating the amount of time, dedication and passion that playing requires. I am sure that there are things that your wife is in to that you may not appreciate on the same level that she does. Doesn't lessen what she does, right?

I know this sounds like trite, Dr. Phil kinda stuff but you gotta talk to her about it. Explain that what she did was kinda rude and that if she was bothered by your playing that night, she should have talked to you about it rather than doing the dueling sounds routine.

My ex used to do that sort of stuff too. But she did it just to piss me off. We were a wonderful couple! :D