Mom had a lot happen in last year, kidney removal due to a mass, gallbladder removal, then she let herself go completely in a matter of 3 months she wound up on dialysis after being in full kidney failure. I found out she has a fantasy relationship with a Nigerian scammer who is catfishing her and she is sending money, she knows the truth but is still sending money, she lies all the time, tells me one thing and siblings another. Then she made up stories about me keeping her prisoner and hostage and want to keep her off the phone and facebook. She was seeing people in her house before she got really sick. But she remembers other things clearly, things from 50-60 years ago. She figures out how to download new chat apps to keep up her fantasy relationship and download zelle app to send him money. She's back living at home alone and I don't know how to help her. I was so stressed that I backed off and told my siblings I can't do it all anymore. Is any of this a sign of cognitive decline or is mom just depressed and desperate? She does say weird things sometimes and she will get mad when I don't know what she is talking about.