The Mermaid In The Well

This is a tale
Of two girls
One sane
The other insane
She dug her well
And jumped in it too
But then she came along
And helped her stay dry
She clung on to her
Like a jacket that saves lives
And made her realize
That each well she digs
Wouldn't be the last
Yet she would do just fine
And now she knows
That every time she jumps,
There will always be a rope
To help her out, alive
This is a tale
Of two girls
One insane
The other her sanity