Check for the presence of another contact card that Siri may have designated as yours. There may be more than one. Do that by going to Settings > General > Siri > My Info. Make sure that's correct. If it isn't, scroll to your contact and tap it to identify you as the "source".
If that doesn't work, go to your wife's contact, tap Edit, scroll down and Delete Contact.
Confirm the deletion of that relationship by asking Siri to "call my wife" for example. Let me know if that works.
Tried both and did not work.No other contact cards. I went to general/Siri and when I clicked my info it took me to the contact list. That's all.
Now I have deleted my wife's contact card and it show no where. Even went to my Mac and not there. Synced
Ask for Siri to call my wife and she still ask's which wife?
Any more ideas?