My niece's Dalmation was diagnosed with this when he was 13. She had the surgery done, and unfortunetly, it reoccured. It also has to do with whether or not it has involved bone, or just tissue. It is totally your decision, but I would personally feel, at her age, I wouldn't want to put her through all of this,as it could return. I would want her to have the best rest of her life that she could. I know we never want to let go, but the older I get, the more I think of the quality of life. It is totally your decision,for her.and I wish you the best for you and your baby. You will have to decide what SHE would want,and not be selfish.