Happy ending are only a pause. There are three kinds of big endings: Revenge. Tragedy. Forgiveness. Revenge and Tragedy often happen together. Forgiveness redeems the past. Forgiveness unblocks the future.
There are only three possible endings -aren't there? - to any story: revenge, tragedy or forgiveness. That's it. All stories end like that.
You cannot disown what is yours. Flung out, there is always the return, the reckoning, the revenge, perhaps the reconciliation. There is always the return.