Not sure. If I find out, I'll post her name for ya.
I don't understand why anyone cares if she's done hardcore porn or not. Enjoy her centerfold and fetish modeling and don't worry about how much further or how extreme she gets. If you're a fan that should be enough.
Everyone has their own opinions on what hardcore vs softcore is, there is no right or wrong to that. For every person who is not into hardcore, there is someone else who is. Telling people what they should like or be satisfied with in regards to content is being rather snobbish.