She's a very good cook, and the things she improvises or makes from memory are much lighter fare. I learned to cook from her, so my meals tend to be fairly light too.
Sure, the fat and salt (and don't forget sugar) are yummy, but they'll kill you. There needs to be a compromise.
An amusing aside, Julia Child said that it's perfectly honorable to be a home cook and not a chef. Making stuff that's good but healthy is an art unto itself, especially if you're feeding vegetarians.