Lung cancer terminal

My nan was diagnosed with likely lung cancer in January. She has recently been in hospital for 4 days with breathlessness and has found out today the Tumor has grown to 9cm on one lung, another Tumor of 4cm on her other lung and another 4cm on her liver. As well as spreading to her lymph nodes. I am heartbroken. 
 

She can't have treatment as she is too fragile and requires a lot of care to ensure her end of life is as comfortable as possible. Does anyone have any advice about hospices or end of life care please? And advice of how to deal with seeing your loved one deteriorating and in pain. 
 

thank you so much