I am noticing things with my 90 year old mother like memory problems, behavioural changes, and such, that others do not see. examples are forgetting, repeating, completely forgetting something I have said two minutes ago. also her personality. she was always easy-going. now she gets very angry at everyone. cries a lot. is very ill with another very serious heart disease. but her changes in her mind make me wonder. its more than depression due to forgetting so much, right after you talk. she does not remember what she said a day ago, sometimes ten minutes ago. Moods are back and forth. sometimes loving, sometimes very angry. our talks go all over the place. something is wrong. Newest thing is saying she wants to die. So scared here. I live far away. Don't know what to do or how to make my sister see what I see. I am unable to take her to doctor. Sister has POA and does not see it. Doctors do not see it. she passed some tests, but they were brief tests, so says my sister. So, I feel guilty because I see it. Can anyone understand this? thank you very much.