The only problem with that is that it's not the only loop Delores could be on, even if not interacted with by a guest.
The Delos Incorporated website had a .gif to show what Delores' loop could be.
http://i244.photobucket.com/albums/gg25/Gimpdiggity/dolores_zps3facspkr.gif
As you can see, it's entirely possible even for a guest not to interact with her and her to end up at a new day at the ranch without getting raped/murdered/attacked at all.
I was actually under the impression while watching the show that for the ranch to get attacked, that was almost a guest initiated event...when a guest would join up with the posse that was going out there, that's when the ranch would get attacked...if no guest joined the posse, the posse's loop went in another direction.