Cannibals In The Woods

One minute, she was riding on a dirty road through a hill on a field trip. The next, she was flipping off the side of the hill and landing in the middle of a small cult of cannibals. How does she know? One, they ate her bus driver right in front of her. Two, they told her she was going to be the bride of their chief or leader. How did this all go so wrong so fast?