13% on a lady - wow! This is very low, and I would not personally use AAS. If you managed to achieve this result without AAS, then you can definitely get some amazing results with SARMS. They would be a much safer choice for you, and they are a much better choice for fat loss. Anavar is mostly meant for lean gains, and it will not do much for fat loss. Meanwhile, such compounds as Cardarine GW and SR9009 will do much more for fat loss with less side effects or things to worry about.