Legal aspects of consent 18: issues relating to euthanasia

Case Scenario: Norah was in the terminal stages of cancer. She lived with her single daughter, Jane, and was being cared for by Macmillan nurses who came to see her daily. She was on a high level of morphine but still suffered considerable pain. A consultant in palliative care visited her to reassess her medication levels, but Norah found that the new medication still left her with considerable discomfort and pain. Norah asked her daughter to help her end her life. What is the law?