I agree with SH--I don't see disrespect in your wife's email. It was brief, but it explained the reason for the request and acknowledged that it might be a problem for you and implied (by telling you to let her know if it was a problem) that she was ultimately responsible for making arrangements.
And since we are giving out email credentials in this thread, I'm a professional writer in a corporate environment. I write and receive oodles of emails.
Your response, on the other hand, comes across as condescending, arrogant, and petty. I can't speak for your wife, but if someone spoke to me like that, I would respect them less than I had before the conversation.
I see many men on the board who seem to have a hard time figuring out how to be strong without being patronizing or controlling. It's obviously tricky to find the balance.
But, since you asked how you did, I'd suggest handling it differently next time.
Me: 44 H: 44 Kids: 20, 16, 16, and 10 Together/Married: 22 years H announced he was emotionally detached and considering D: 4/4/16 H announced he is going to try to stay and reconnect: 5/1/16