Upon mature consideration and uffish thought, I conclude that the second verse should open:

"All black," cried Lady Mondegreen,
"All black," she cried, "umbrella day!
Upon the green when but a teen
My Earl Amurray died on me."

That more purely expresses her state of deep depression at her bereavement, and at having to be a single mother on that desolate coast in bad weather with freak tides and Things coming out of the surf at her in the middle of the night claiming that they had sex with her.