It really was shocking that so many people had been taken in by this woman (I think her daughter had been infantilised by her mother and was completely controlled by her). It was also terrible that her mother used her daughter's condition to so that she could be chums with famous people and live a life of luxury. I too think it was odd the way the daughter died - and I too wondered about the boy who was supposedly a friend of Meg's.
What really worried me was, at the end it was said that she was living in, I think, France and was an "influencer" working to champion older people. That sounded very dodgy to me.