"Good night, Willie Lee, I’ll see you in the morning" Response

Is any unfinished business here?

to me i do not feel that there is any unfinished business. I feel like this poem says that the mother is not bothered by her husbands death and knows that his soul will be reborn in heaven. She knows that he is not completely gone and will return when it is her time to be with him in heaven. that is one way the poem could be interpreted. Another way is that the mother is greiving and says she'll see him tomorrow morning meaning she will see him in his casket at his funeral.