Look at this holiday as a time to make special memories with your GD. Let her start new traditions. She will always remember her first "TG" in her little apartment and making do with whatever happens. LOL! Make sure you pass along the recipes too.
Does she need help the day before? If possible, offer your help and expertise with preparations. Take the dishes/silver and set up the day before. Certain foods and pies can be cooked the day before. It will help prevent that frazzled feeling for a new host.
Do you have a large cooler? You can use that to keep the food items warm. There are insulated bags that keep food warm. Just be careful with food temps.
Bring your coffee pot and coffee for her to use for the day. It could be a perfect time to give her an early Christmas present if you have coffee lovers in the crowd. Wine? Perfect!
Most of all, enjoy your day and relax! It's time to pass the baton and start new traditions.