Your sister might experience anxiety. Anxiety causes shortness of breath, trembling, and disrupted sleep. It also affects appetite, leaving one feeling weak. When the body is stressed, it impacts our well-being and eating habits. A crucial step is helping her relax. Simple activities like deep breathing, calming music, or enjoyable hobbies can soothe her mind. Ensure the eats well, even if it's small, frequent meals. Encourage healthy snacks like fruits, veggies, and nuts. If her condition doesn't improve, it's advisable to consult the doctor again.