Hardcore BDSM domination with a mature unstable woman

This video features a very eager woman, and she is very much a mature woman, trying to explore her fantasies of this BDSM nature. A man controls her, with the help of a machine, doing things with her that give her extreme pleasure and extreme pain. The woman is obviously getting off playing the role of the dominated one however the viewer or viewer is wondering she is doing it out of pleasure or out of fear.