I agree w/Bea. She needs to grow up and figure things out for herself. BTW, who is paying for the U-Haul? Most of them are automatic, so there shouldn't be a problem w/driving it. She can also rent the furniture rollers, as well as hand truck to assist in moving the items to the truck.
Like Bea mentioned, it's ultimately your decision, but I don't see where this is going to help you mentally and emotionally because she's been pushing your buttons quite a bit. It's one thing if you assist her in moving things from your current residence, but another from her grandmother's home.
Just my two cents...allow her to figure this one out w/o your help.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
