Rebecca/Bertha is told by her brother that her husband is coming to heaven. He warns her, however, that he will not be able to recognize her right away. It isn't spelled out why or seems even that that is the case when he arrives, but I think he was warning his sister-in-law that her husband, Frank's brother, will have much of the earth-life still in him and will not recognize who Bertha has become since she has been in heaven so long and has gone to the River of Life  many times. She discusses much about the missions to earth to visit people still on earth. I am not sure this is biblical but how can I know? She said before that they do not recognize these messengers' presence when they are near. I guess we'll find that out later. But, it is a happy reunion nonetheless.