What to tell Grandparents
Jill,
The best thing you can do is be honest with them. Let them know why you have choosen this route. Let them know that you want them to be involved but there is no reason to worry. Easier said than done, but if they didn't worry, they wouldn't be your grandparents, now would they? Write them a letter--get some of the anexity off of your shoulders and share it with the people that love you, that is what they are there for. Express the desire to be around for them when they will need you the most, and this is a tool to make sure that happens.
I hope everything goes well, Good Luck!