My Grandma, whom I absolutely love and is the best Grandma, is moving back to my city to live here! I never thought she would but I can't wait! 
That's great, what will you do when you first see her?
Give her the biggest hug and help her settle in.  She's going to a wonderful retirement place that is so nice, I wouldn't mind living there right now!
It's nice you have such a good relationship with her!