That's a tough situation to be in. Is it a repeat customer or first timer? Can you see any reason why the customer would lie about who the last person to work on the vehicle was?
If you're confident about your tech and see no reason to doubt the customer, I'd eat the repair and offer next 2 oil changes free. If you sell BG product, I'd throw in a road side card with the services too for their peace of mind. You could also tell them you've changed shop policy and now require all wheels to be torqued with a torque wrench or torque stick. All this to earn their trust back and show them how much you appreciate their business.
However, if you're suspicious of the customer, I'd probably eat the repair and that's it. No additional recommendations, no freebies, just fix it, double check all 4 wheels with a torque wrench, apologize, thanks for the opportunity to make it right, and be glad it's just a wheel you have to replace and not ending up in court.