You did what you knew was the right thing to do in this situation.  No matter how it would have turned out you would have felt good about trying to make things right.  The fact that it turned out like it did just gave you an unexpected blessing. 

Thank you for sharing this with us.  Hopefully it will encourage more of us to take the high road in disputes.  Sometimes adverstiy will make a friendship even stronger because it is then the true character of a person is revealed.