Being a vegetarian is healthier and brighter than eating meat. Don't worry too much. Mushrooms, all vegetables, tofu, fruits, hard shells, beans and so on are much better than animal food. There are many vegetarian recipes on the website for reference.
You care about your mother's health. You are a filial child and must be blessed. You might as well be a vegetarian often, or you can develop some delicious and healthy vegetarian dishes!