Welcome to PT!
For giving your hedgie people food, the rule of thumb is to basically treat their diet like a small childs. Nothing spicy, nothing difficult to chew and nothing with lots of fat (hedgies have problems with obesity). I would stay away from any dried fruits & nuts and I would skip lettuce, romaine, kale, etc - they don't have much nutritional value.
Fresh fruit & veggies are great for your hedgie. You can try grapes, apples, any kind of melon, strawberries, peaches & bananas. Also try carrots (might want to cook them a little), brocolli, cauliflower, peas, pumpkin, sweet taters (no white taters though).
Baby foods are ok but only feed them about once a week and in small portions. Try to get ones that have good nutritional value (ie. sweat peas, squash, chicken, turkey, yams, etc)
She can have cooked meats like chicken, turkey & salmon (room temperature to slightly warm). Chicken seems to be the biggest hit with most hedgies and is very good for them. I would feed it every other day or so depending on what else you are feeding.
Fresh mealworms, waxworms and crickets are great for hedgies and they love 'em! You can also feed freeze dried if you don't like handling live ones.
Feed your hedgie 2-3 a day about 1-2 times a week. There is also this stuff out there called Can-o-worms & Can-o-crickets. That is fine also - it's not freeze dried just preserved in it's own juices.
Just remember to stay away from any foods that are high in fat. Which means you can give your hedgie egg whites, but stay away from the yolks - too much fat. Egg whites are a great sources of protein. Good questions!