Dear Rita--I don't know you as well as some others here, but I can speak as a person who lost her mom when I was a kid.
In my opinion, this story is a small kindness that in no way hurt anyone else and is a gift. It's a gift to you, to your beautiful granddaughter, and to the people who were able to open the door so she could join the team.
IMO, you didn't play the sympathy card, you advocated for your granddaughter. I'm touched.
I'm so glad she gets to Cheer and hope she LOVES it!