That's disturbing. I'm all for older folks dating, but grifters prey on little-old-ladies all the time and wheedle their money away from them. I know your mom is in another state, so I hope she has someone nearby watching out for her.
My MIL, when she was alive, had a younger gent from her church who paid a lot of attention to her and made her giggle and feel good, but then he managed to scam about $10,000 from her. It would have been more, but SIL noticed and stepped in.