I am scared and very sad

I have a cousin who is 81 y.o. living in Europe and I used to call her periodically or exchange pleasantries via email. I was about to visit her and her son in April but the COVID hit and ruined my travel plans. The last time I had a normal conversation with her was July 17. Today I called her and she hung up first. I called her back and she mumbled some unpleasantries then hang up again. I was devastated. Did I do something bad to her? Then it dawned on me that she at her age can have mental issues. The weird thing is that she seemed so lucid and together in the past months. I am now trying to get in touch with her son. She is the last relative of my family and I do not have too many friends. No siblings or other relatives.
I am 64 in Dec and of course the idea pops in my mind, "this can happen to me".
We were not close because for decades I did not seek out my relatives. Now of course it is too late. But I am blessed by the little time we had to talk and share memories of my grandmother and our family.

Oh no... that's so sad. I'm sorry, I can imagine how hurtful that would be, and the double whammy of worry that she may be having some problems with cognition and that you could experience something similar.

Family stuff is so hard. Even when they're extended family, far away.

I'm really glad you had the chance to talk to her when you did, and that you have some positive memories of her now. Fingers crossed that you can reach her son and find out what's going on!

*hugs*