Hi Gramma G, welcome to Susan's! I'm so, so glad your grandson is alive and well.
I know many parents feel they have lost a son or a daughter and that grandparents likewise feel that loss. When I came out to my parents my mother's comment was that "I have two daughters now", which was touching but I added, "you always have." She smiled and nodded. It took her a few months but I feel she is now truly sees me as her daughter. Out of all my family members she is the one who has tried the hardest to make that connection. My father still wants to see me as his "son", my sister hasn't really embraced me as her sister. I guess what I'm trying to say is that family members place a lot of emphasis on the gender designation of their sons, daughters, grandsons, granddaughters, mothers, fathers, brothers, sisters, aunts, uncles, nephews, nieces, etc. At the heart of it all though, they are a child, a grand child, a parent, a sibling, kin, family, a person.
My best wishes to you and your grandson. 🙂