skishyish - Yes, confirmed. It is from her case. I spent a good deal of time with F.K. and her daughters in the 1994-1995 period. As for the supposed resemblance of the wise, old reptilian to Ruby, part of that may simply be due to my own drawing style. While I try to be accurate in making my line work match what the witness actually saw, the fact is that my medium and technique, and the "shorthand" that my brain uses to represent things, is going to have some influence on the outcome of my artistic efforts.
My suspicion is that Ruby was a meat eater. My therapist friend didn't actually describe her teeth, so they must not have been that noticeable or memorable in the experience, but when she first became visible there was a rush of air, accompanied by a rotten egg and fish odor, as I recall his description. I don't know if the odor was related to diet or hygiene, or perhaps it was kind of a territorial musk. You ever catch a garter snake? It can be a stinky mess.
Here's a collection of three drawings of a tall being with cat-like eyes and a Dracula collar from page 8. These were inspired by several sources, including a drawing from Dr. Edith Fiore's book Encounters. As with many of my drawings, this is me experimenting and "feeling out" the range of variation of reported alien beings, rather than attempting to represent a specific being that someone has described.