I've taken her to pvt a few times and - well - it's difficult to summarize! First off, in my experience she's only ever been lovely to talk to. Good English, charming and smart. I know a lot of the girls don't like to talk forever in free chat, so maybe that explains your experience there. I do make an effort, though. And that may be the problem I have. She's a great poser, without any doubt, and she's not exactly reluctant to pose, but... she takes a little time to warm to her audience, perhaps. I don't think she enjoys having commands to flex barked at her, and this means a chat session does feel quite expensive for what you get. I can't see her rules while she's offline, but your comment doesn't surprise me.
Overall, I'd give her a lukewarm recommendation. I haven't yet coaxed her into an absolutely mind-blowing show but I will definitely spend money on her again. But I might wait till she's in peak contest shape before I do...