It seems like you're trying to express dissatisfaction or a lack of confidence in someone's cooking. If you're looking to communicate this to someone more clearly, you might say, "You probably won't like the food she has prepared." Remember that taste is subjective, and what might not be to your liking could be enjoyable to someone else. Nonetheless, it's important to communicate such opinions tactfully, especially if the cook has put effort into preparing the meal.
