My sister was diagnosed last year stage 4 NSCLC , one brain met , they remoed th emet and shrink hte tumour on the lung a few month ago she had a spinal compression of which they shrunk but they bekivee is now growing, last few months her legs have become weaker and weaker she cantrerallywalk or feel them  and they do not seem to know why, now two weeks  ago she was rushed to hospital  with a perforated bowel and had emergency surgery , now she has a bag , but her legs are worse, she is stil in hospital as had four days in intensive care, she is so strong and brave, its heartbreking, we are stil waiitng for answers but she said that she wil need help whgen she ocmes hmne, not sure what that menans and also she needds to sleep down stairs, she also has  mottled legs and her ears look a tinge of blue, is she getting ready to pass ?? Im so sad and so proud of her courage but its so cruel  to see all this , also to add the oncologist told us yesterdaythat her t12 tumor is moving fast and ready to explode?? 

what does that mean 

thank you