Sounds like you need to hit the supermarket and get some stuff.
I suggest something italian for tomorrow - Lasagne, or a nice special pasta (no Prego)
Then either roast chicken, turkey, or honey glazed ham for Christmas day lunch with veggies and pie - with cheese and crackers and cookies for later when you get the munchies
Finally, something light for day after Christmas since you'll have loads of leftovers - maybe chicken caesar salad or something
Get some citrus fruits in too and maybe some mixed nuts - even cereal makes nice brekkie if you've got fruit to go in/on it.
She'll prolly be happy just to be with you and all the food will be icing on the cake but as you asked for ideas...
