secondary card member auto renewal ?

I am the primary Bjs card holder and my wife the secondary. She made a purchase and wasn't paying attention to the screen on paying and got a print out stating that auto renewal was turned on. I checked my account on line and it says I'm not signed up for auto renewal . Will her cc be charged when renewal time comes up? I would think that the primary card holder would be the only one who pays for renewal ? We don't want the auto renewal...