So, here's a realistic theory. What is the most likely thing Lenore would do before leaving for a year? She visits her dog Myrna's grave one last time. The bulette lives near there. "Goodbye Bulette," says Lenore.

"Goodbye Lenore," thinks the bulette with sinister intent.

And Lenore was never heard from again.

Side note. 1492 is current date. 1481 is 11 years, almost twelve, earlier. Why say, "about 10 years ago?" Why not "almost twelve?"