Yes, Daphne will interview people like with Aaron Carter, but then claim a tonne of stuff was also said that she can't prove, though she will insist footage or proof exists and it doesn't.
So yeah, Grace sat with her, but did she say all the things Daphne claims? I'm not saying Grace is a saint, but I find it hard to believe she said all these things and they just happened to be off camera (she claimed the footage existed though, didn't she?), and considering how Daphne's got a habit of doing the exact same things as she's accused of doing here, I side more that the rest of the supposed footage/evidence she said these things doesn't exist. Hell, even if it existed, unless it's without any editing, I wouldn't believe it, as Daphne also completely edits around what people will tell her to give the story she wants. She's one of the worst journalists around.