My mother in law, also she was my best friend, died from lung cancer 2 years ago on Valentines day. She too was somewhat "mean" while on the morphine, but mainly to her husband. She took turns with the rest of our family, we all got a share. She would have never ever been cruel on purpose. She was diagnosed in Sept., put on oxygen on Thanksgiving, spent 3 wks in hospital beginning the day after Christmas. She died the following Feb. Hers was inoperatable. She only had 2 kimo treatments. She was very afraid, and basically gave up. She didnt want to fight anymore. Her daughter, my sister in law, is an RN and stayed with her from Christmas until the end, day and night. We were fortunate to see her everyday during her illness and show her that we loved her. I say fortunate because it meant alot to her and us for her family to be around her. It was tuff though. I would drive home in tears. I am so sorry someone else has to suffer through this. We kept a journal during her last months. We wrote things down like, what she ate for the day, the time and type of meds she took, her behavior, etc... There were some funny times too. One morning she started talking with a british accent, she was apparently having tea with someone. She is from the South, the accent was strange, but we laughed. I will say a prayer. Take care.