Only time will 'heal the rift/breach' between the two families. [=make the two families become friendly again]
The tree sap is believed to have 'healing' powers.
After the divorce, he needed some time to 'heal'.
(..) Back,you devils! Frodo! Oh,Sam. Strider! -Help him,Strider. -He's been stabbed by a Morgul blade. This is beyond my skill to heal. He needs Elvish medicine. Hurry! We're six days from Rivendell! He'll never make it! Hold on,Frodo. Gandalf! Look,Frodo. It's Mr. Bilbo's trolls. (..)2001 The Lord of the Rings: The Fellowship of the Ring
(..) A secret now that only fire can tell. '' Shire. Baggins. There's no Bagginses around here. They're all up in Hobbiton. That way. To heal my heart and drown my woe Rain may fall and wind may blow But there still be Many miles to go Sweet is the sound of the pouring rain (..)2001 The Lord of the Rings: The Fellowship of the Ring