After the election, he spent a lot of time 'mending' political 'fences'.
We've 'mended' our differences [=stopped arguing] and agreed on a plan.
Only time can 'mend' a broken heart. [=make someone stop being sad]
(..) Much more flexible, though. Mr. Malfoy, stop making such a fuss. You can go. Out of my way. Should have been brought straight to me. l can mend bones in a heartbeat, but growing them back. . . . You will be able to, won't you? l'll be able to, certainly. But it'll be painful. (..)2002 Harry Potter and the Chamber of Secrets