New problems

With all those problems that have been unfolded in the aftermath of Alexander’s death I always made myself believe that this would not happen to me again, never again. I would hopefully see the signs early on and act in a better way. I would be able to help the person who might not even see he needs help.
Now, yes, already, I have a similar situation within my own family. A very close family member is behaving in ways I used to know from Alexander years ago. At this point it is in no way exactly like what it used to be like the last months of his life but how it was several years ago. And compared to that it is scarily similar. But what to do? I am just as helpless as ever, or almost. I hope that I can get that person to see a therapist, I guess, what changed is that I do see my own limits and those of my family clearer. I see where I need help. But I want to do more but am unable to help. I have to completely trust a therapist I do not know and believe in his/her ability. This family member does only seldom see the problems caused by him/her and mainly blames the others. There are outbursts of accusations and ugly at that which cause big problems within the family. I feel so helpless again, so tied down. Again I can only hope I am doing things better, I do not know it. I am so scared of a similar spiral as Alexander’s.