The Homecoming by Mike Resnick is an interesting counterpoint story to The Paper Menagerie. The Homecoming is also nominated for the 2012 short story Hugo and concerns a parents alienation from their child. One parent through Alzheimer’s and the other through the son becoming alien.
This was nicely done. The SF elements helped to highlight the differences in what is really a very common occurrence. It seems like Hugo voters have balanced the wild hilarity of “Shadow Way of the Night Dragons” with several fairly sad stories.
You can find a copy to read here.