My condolences, Pat. It's difficult when all you're left with are memories, no matter how fond they are, and extremely hard when you're so far away that you can't participate in the usual leave-taking rituals.
I am so sorry for your loss. Grandmothers are so special, and it sounds like yours was a wonderful woman, too.
I can just picture her at the dairy farm, watching out for the kitties. Can you imagine how many she has swarming at her feet up in heaven!?! All the little Butterscotch's and others, happily welcoming her.