Hello and welcome to HCM. As an Urologist, i must advise that a 1 cm kidney stone, can be easily treated by ESWL.(extra corporeal shock wave lithotripsy). This is totally painless and doesn t need admission in hospital. It s available in most major cities of india, and in many major hospitals of Bangalore. She may receive a mild sedation or analgesic tablets. She should maintain drinking 10-12 glasses liquids daily. She may try medical treatment for some time before opting for this also, depending on conditions. You may clear any doubt by directing it in my name here. Wish her well.