Thank you, Gimmeice,
I really wish they wouldn't have this wanderlust, and just stay put, or move within the USA. But I do have a good relationship with my daughter, and can talk about my feelings openly with her. Last night, on the phone, I told her how I was feeling. I asked her about her husband's parents, and what they thought about this, to which my daughter replied, "Oh, we won't tell them until we've signed the contracts." Mitch's parents are very involved with the twin grandchildren, living only 45 minutes away and spend lots of time with them. They're also both retired, and their main interest seems to be the twins and spending all the time they can with them. I worry what this decision will do to them! though I didn't say that to my daughter.
Patty