If your daughter is experiencing anxiety and lack of energy, it's important to first identify the potential cause of her symptoms and address any underlying issues. It's recommended to seek professional help from a doctor to evaluate her condition and discuss possible treatments. Psychotherapy can be very beneficial in managing anxiety and teaching coping mechanisms. Additionally, lifestyle changes such as relaxation techniques, avoiding substances like alcohol and caffeine, getting enough sleep, eating a healthy diet, and exercising regularly can help improve energy levels. Providing a well-balanced diet with regular meals and considering meal replacement options can ensure she has the energy and nutrients needed for proper bodily function. Vitamin supplements can be used to complement any nutritional deficiencies in her diet. If you have further questions or need assistance, feel free to reach out to a healthcare professional for guidance and support.