This was not her imagination. This was a divine gift to her and a recognition of her great love and devotion, and a parting gesture to signal her that the bonds of love persist, and the relationship persists as well—that he is indeed alive and well and can see her and loves her still. This was a perfect message for her because it was something unique to him that would have an unmistakable meaning, and is an example of what the divine realm can do to create a miracle for someone who is open to the possibility and in need of the witnessing. Your client is deeply, deeply loved and cherished and her husband wants her to know that her happiness is the most important thing to him and that he will be helping her with her life, and wants her to go on and flourish in all she is doing. He is safely in the light, and this is the reason he was able to manipulate his prior body and create the display for his wife to recognize. If he had become an earthbound spirit, he would be truly cut off and entirely unaware of her or her whereabouts.