Here is a link to her website
Her work in recovering the religious practices of ancient Israel is quite interesting. She also has a lot of eye opening things to say about what was going on in Israel around the time of Lehi's exodus. Most of her work is totally independent of any LDS influence. It wasn't until after she had written several books on the subject that she was contacted by LDS scholars who were interested in her work. She was quite surprised to find out what the scriptures of the restoration had to say and how closely LDS theology supported her theories.
Here is a link to an MP3 of a lecture she gave at BYU in May of 2003.
What Did Josiah Reform? The Earlier Religion of Israel
She was also a respondent at the Worlds of Joseph Smith conference that was held at the Library of Congress during June of 2005 commemorating the anniversary of the prophets 200th birthday.
Session 2: Joseph Smith and the Recovery of Past Worlds
There is also a paper at FARMS discussing her work.
Paradigms Regained: A Survey of Margaret Barkers Scholarship and it's Significance for Mormon Studies
BTW, I think it interesting speculation about the Pyramids being the pillars of Enoch, but IMO, that’s all it is, speculation. Enoch was translated into heaven before the flood, and Egyptus and Ham settled Egypt.
What I have heard in several places in Hebrew lore is that the pillars were hidden underneath Mount Moriah, and when Solomon build the temple there, he discovered them, received the ancient knowledge, and hid them up again.
Who knows, I’m sure one day we will all find out.