Dear Matthew, Ms. Keating has sort of ridden on the wake of Malachi Martin. For some more information from someone of much higher quality, Michael Corbin of 4acloserlook.com might be of interest. Also William H. Kennedy, who was a friend of MM and has written a lot about satanism in the Church might be more credible.
Keating says the Antichrist came in person to her horse ranch. I listened to an interview with her a few years ago, and it was so scary and depressing (even for ME!) I had to turn it off.