I have a buddy that has a 2010 Focus and he has trouble with his tires.I have been driving for over 50yrs and had a lot of cars in that time and I've had tires last over 50k and can't ever remember rotating any tires.the backs always went first.Well first off, it was a woman so of course they are going to say the car needs something. Also it normal and common practice to rotate your tires every other oil change, that's just normal tire maintenance there. And them saying it's hard on tires, that falls under the "woman customer" thing. Why that is a BS excuse, they could have just said that's normal maintenance to do it at those times. I don't know why they had to "lie" to your wife about the hard on tires BS.
Just reading that pisses me off. Shops do this all the time to women.