What do you suggest if my little neice (3 years) has embryonal rhabdomyosarcoma in bladder (botryoid type) which is a type of cancer.?

Pediatric oncologist: Rhabdomyosarcoma (RMS) is usually curable in most children with combined use of surgery, radiation therapy, with more than 70% surviving 5 years after diagnosis. Should be in care of pediatric oncologist. Embryonal most frequently observed subtype . Prognosis of depends on extent of botryoid type at presentation. Bladder sarcomas less favorable than some other locations.