I had a family member lose upwards of $300k before one of her financial agents contacted us. It was a "security system installation and monitoring" guy. Had done it to many people, apparently being the security alarm guy gets a lot of older people to trust you. Luckily we saved some funds and a pension to take care of her, but it was incredibly maddening. It was after another person passed who had kept tabs on her business, as soon as he passed the scam artist started siphoning money.

In my case she still trusted me and we got control as she developed dementia, but it took some time and money. If there is anyone else she likes or trusts more than normal, that might be the only person who csn get through.

I'm sorry you have to go through this, good luck.