Nowadays, the technique of crocheting chain/jewelry is almost as
universal as some of the other techniques of weaving chain (loop in
loop, chainmaille, etc.).
Also, you are aware that there is a difference between "crocheting"
and “Viking weave” techniques? What is actually a Viking weave or
knitting is also sometimes referred to as “crochet,” when indeed an
actual crochet hook is not used. Do you know which one she is really
using? That would help because if it is the Viking weave-then that’s
been around for eons.
In any case, here are some books I have that cover both crocheted
jewelry, as well as the Viking weave and other knitting techniques. I
know you’re looking for older pub. dates/photos, but I haven’t been
able to dig up anything like that yet.
Crochet (that is, with a crochet hook):
Crocheted Wire Jewelry, by Arlene Fisch
The Complete Book of Jewelry Making, by Carles Codina (pg.
154-155)-Originally pub. in 1999 as La Joyeria; also has a photo of
a flat, strap-like piece
Crochet with Wire, by Nancie M. Wiseman
Viking Weave and other “Knitting” Techniques:
The Complete Metalsmith, by Tim McCreight (pg. 227)
Great Wire Jewelry, by Irene From Peterson
Professional Goldsmithing, by Alan Revere (pg. 52-56)-pub. 1991
There are also other members of this forum who have been using
actual crochet techniques, with a hook, for a very, very long time-so
I don’t think this lady can claim a monopoly on the technique by any
means. But, again, is she trying to claim the actual technique or a
design? If it is indeed the technique, by virtue of the fact that
there are so many books available on how to do it, along with
numerous design illustrations, etc., I don’t see where that’s
possible. But I’m not an IP attorney either.