Because she went through a lot of pain and suffering when she was raped by an uncle of hers when she was like 15 and started talking about that on public television for the next 4+ decades.
"mmmhmmm" - "Yes, so true" - "I was just saying that to Gaile the other day" - "Really? I did not know that *turns to audience* did you guys know that? - I did not know that"
I think she used to be real in the beginning, but now she just oozes gallons of faux-interest. She's not interested in her guests' problems or issues (when she still has a real person rather than a celebrity), it all just comes across as fake.