"Grandparent's Surprise Awaits Kids on Next Visit"

TL;DR
A parent seeks advice on how to prepare their young children, including an autistic son, for visiting a very sick grandparent in the hospital. The advice includes being open to questions, possibly using photos or videos to preview the visit, and creating a tailored social story to help the children understand and cope with the changes in their grandparent's appearance and behavior.
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