This song is called "Pretty Penny".

Lyrics:

Have you seen your mother girl?
Has she gone away?
Gone away and found the pearl
But the price she paid gone
When you wake in the morning gone
When you find that there's no one sleeping gone
Pretty penny was her name
She was loved and we all will miss her


How far will you go I say,
Just to bait a mouse?
Shorter lived and longer gone,
Can you figure out?


Have you lost your sister girl?
She's all but blown away
Blown away and lost the pearl
And the price she paid (less info)