Hi MSC, I'm sure Lara's really dedicated fans will respond with chapter and verse, but as I recall it, that "interview" was inspired by research Lara did for an MA thesis on aspects of the vampire motif in literature. Not only did Lara do some research for that academic work, but she also did research on the occult for her two novels.
What I recall of the interview is that Lara's delivery of her lines was rather wooden. But I think she has done some of her own work in these areas. I don't recall any especially new insights as the terrain at this stage of things is very much tried and true material.
G.