It is very true, we have to do things in life, because when the people we love die, there is no point in crying, licking and tantrums, everything has to be given in the now.
I understand you, I also have an 84-year-old grandmother and she is super affectionate, she is still active, she listens perfectly and she has a memory, better than mine 😅.

I hope you really enjoyed that stay in your Grandma, moments like those are the ones that matter. Greetings