"They want Tessie sold to the highest bidder, apparently." She's not sure how much they want it to be common knowledge, but telling a journalist anything without specifying that it's off the record means it's fair game. She's not going to keep their secrets. "They think I might be able to sway public opinion. And think I'd be willing to without getting all the facts."

That's the insulting part. They promise her information if she does something, but it's something she's not willing to do without the information. It's the wrong order. Even if she trusted them enough to take their word as truth, which she doesn't, she won't publish on faith. It goes against everything she stands for.