Whatever you feed her that she'll eat is her 'diet'! LOL
Really, just follow your own instincts and her desires. Think of all the babies in the world who have ever lived and what they have (or don't have) to eat.
Even if she doesn't have teeth, she can eat green beans, cooked carrots, dry cereal, etc (finger foods), mashed potatoes (sweet AND white), bread, applesauce. . . . just about anything you eat. Just be sure not to add a lot of salt, sugar, and fats. I think I still fed mine baby food meats til they could chew a little better (they're 20, 23, 28, and 31, now!)
A mini-chopper is a wonderful way to let her eat anything you eat.