Sorry Nancy, I am in the same boat you are, but more miles between them. I have 12 total grandkids, 2 live near us (1 about 10 miles away the other about 45 miles)and if we see them we are the ones that usually get to use our time and gas...... The other 10 are in California and New York State. The 2 in NY are my biological grandkids and it was a very hard decision when the oldest was born not to move back there. We moved to AZ 16 years ago and the oldest GD in NY is now 8. I so wanted to be around them, but had to admit I left NY for a reason and couldn't go back to live. To help we are online with video with Skype, we go back as much as we can and when DD got married last year we took care of the kids while mom and dad went on their honeymoon.
I hope you find a solution to your own problem that will bring you closer to your DGD.