Mum just diagnosed with bone cancer?

hi just wondering if any can help me what it is my mum has just found out she has bone cancer we dunno how bad until monday but she had a full body scan about 3 weeks ago and nothing has showed up in her organs and she is showing no symtoms i have looked on sites and most of them say its cureable and some say its not what is the chances she will survive she has had breast cancer twice before shes 50 years old