I am assuming your wife doesn't want a high performance machine. If you are not dead set on a Polaris, I would recommend one of the smaller engine Mules with 2 seats. They are dependable and you can probably get a new one for less than a used Ranger.
https://www.kawasaki.com/en-us/side-x-side/mule/2-passenger/mule-sx/2025-mule-sx-4x4-xc