Please help my mom: what can't she eat and what can she?

She probably can't have food with acid, or things like broccoli that is very abrasive to the stomach, spicy foods. She can have soups, salads, mac and cheese, mashed potatoes and gravy, meats except salami, pepperoni. There is a lot she can have, breads, pancakes, corn breads etc.Eggs bacon.