Pinhead is totally into Kirsty
They cut out the one part of the movie that made any sense.
The extended version of Kirsty's deal with Pinhead, they talk about how he sacrificed himself to save her, AND talk about Frank. Thus ascertaining who she is (I only suspected it was the same girl, i had no idea who she was)
And apparently Pinhead gained a bunch of patience for her. I recall him saying "No more deals!" but now he's all "a deal? interesting..."
Now obviously they have a history, and they clearly developed a chemistry, i think he enjoys stalking her, he can't wait to get her to hell and show her some pleasures ;D
He mentions how shes become a formidable opponent or whatever, and she says she learned from him (the best).