I've found it.
It starts on page 147 with the 'facts' as told to the Traipsin' Woman, Jean Thomas.
"Lora Williams, scarce 16, was ordered to swear out a warrant for her 'false true love'. The girl troubled over it and thought of a plan to escape from doing their will. One day she 'made out' like she was going to the spring for water. But instead she went to the high rock, known as 'Steeple Rock' overlooking the river and drowned herself rather than swear against her betrayer. When the parents came to look about the house, they found that Lora had laid out her 'burying clothes.'"
It was sung by "Widder" Kizzie Talcott's Dan, a blacksmith who said "On account of it bein' a lonesome piece I sing it to the tune of The Little Sparrow."
"Come all ye fair.....
All 10 verses.
Let me know if you want the lot - it has the music as well.
Robyn