Yes,
You keep stating this and we keep telling you Apple offers NO solution for your use case.
Rbrylawski gave you very good advice.
Since you are using Windows already, maybe instead look at Microsoft Surface Pro tablets, instead.
Microsoft mobile tablet products support all manner of input devices and ard a familiar computing platform for you and your wife.
Maybe, just maybe, they included support for a headset controlled pointer.
Apple offers no such support.
This is the way it is.
Nothing any of us users here can do for you.
Since this is an important issue to you
If you really want to reach out to Apple about this and stop talking to users here in these support communities, you CAN contact Apple directly in Cupertino, California, via the link below, and speak to various Apple customer representatives and let them know of your specific mobile iDevice/iPad use case and make your concerns known to them directly.
Contact - How to Contact Us - Apple
Best of Luck to You!