My wife has a torn meniscus in her right leg- what can she do to help it get well?

My wife injured her leg in sports activities and a car accident. The accident exacerbated her condition. She is significantly overweight. Right now, her right knee hurts her fairly badly. It helps her when she uses a cane to walk. She is 35 years old. Evidently, the lateral meniscus in her right leg was either strained or torn. What can she do to alleviate the pain and to make this heal up?