I used to have this movie on EHD. But the damn drive crashed and I lost everything. There are only two live-action actresses listed in the credits, and this little hottie is likely one of them. But it appears this might be a one-and-done dabble in erotic acting for her, as there are no other acting credits listed under either name on any available sites...IMdb, IAFD and the like. Search the two names and you'll discover nothing. I have a good knowledge of and inventory of vintage erotica, and she doesn't ring a bell...and believe me, looking like that, it would've rung loudly. Did porn under another name? It would have been found out by now. I hope I'm wrong.
UPDATE: It's Carol Piacente aka Carol Piacente Tennenbaum. Kelly Gordon was a guy. Carol is listed so she likely is your girl because she had a speaking part during the live-action segments. But as I said, don't try and find anything else under that name. In the unlikely but possible event that she did anything else under a different name, it would take a needle-in-a-haystack miracle to find it...i.e. as a loop film from the 70s or some such thing. Good luck. But as I said here, it's likely there's nothing else.