that’s funny. i have the exact inverse problem. when i ask siri to call my wife ( by her first name only ) it gives me a list of two to pick from, whereas my car does the opposite and calls my wife.
Why don't either of you just tell Siri who your wife is? You can say "My wife is" and her name, it was verify that it found the right one and after that you can just say "call my wife", "sms my wife", etc.. You can do the same thing with your boss ("call my boss") and various other tags.
