Grandmothers are indeed a special breed. My Grandmother once wen't on a train trip with me after fracturing her wrist as we arrived at the station. It wasn't until she saw a doctor a couple of days later we discovered the extent of her injury.
And then there's my own Mother - my daughter's Grandmother - who despite living in a different state, regular video calls mean my 2 year old can bond with her and maintain a connection without the expense of physically visiting.