What a wonderful short portrait. I've read many interviews with her over the years, so am well aware that this one is just glancing over the surface of the very complex entity that is Barbara Steele.
Interestingly, Grayson Hall made almost the same comment about "duality" in a fan interview in the early 1980s when a fan was asking her about Julia's complicity in the murder of Dave Woodard.
I wish that Barbara's 1966 film An Angel for Satan would get a proper DVD release. Sinister Cinema or one of those firms has a version that is Italian-only. A small firm that specializations in exploitation titles is working on a restored release of Nightmare Castle which will be great if they can pull it off. The complete print was found in a vault in Italy--very appropriate for a Barbara Steele film.
Another one that is little known and I think has some surprisngly effective and even touching moments is The Crimson Cult, filmed in 1968 but delayed in release for some years.
Best wishes,
G.