Best Answer - Chosen by Voters
I believe the author meant that she just haunted him. I don't think it has anything to do with his wife. But by haunting him, she became intimate with him. And he came home to Mallory every night...just as he came home to his wife.
I believe that her desire to see that justice was done in the case of the Slocum meant that she would be haunting him until his death. In the Epilogue, Welsh says, "It took Barnaby seventeen winters to die." But now that he, and all the rest who were guilty, are gone, she can finally move on. As she says, "It's done...Will you lead me? Will you open the door, please?" This is Mallory saying it's over and it's time for her to move on to the next world. It's her cry to God to finally open the door. And, I believe, He did.
Source(s):
The Unresolved by T.K. Welsh