What happens in the last few stages of terminal lung cancer so I know what to expect please? She is on 24hr oxygen.

Unpredictable. Lungs may fail with shortness of breath and blue skin. Right side of heart may fail with shortness of breath and fluid overload. Bain metastasis may cause headache or coma. Infection may be sudden and cause padding in hours. Cherish each day. Discuss her wishes for the last days. I m glad you had one another.