So fascinated by the choice to produce a teen production of Caroline, or Change and how the teens are responding to the material.
I agree with what others are saying that functionally it gives the show a lift and a break after the emotionally taxing "Lot's Wife" but I've thought there's more to it than that--beyond the water imagery, it seems to me that "salty" has to do with the "pillar of salt" as well.
In "Lot's Wife," Caroline asks god:
"Murder me God down in that basement,
murder my dreams so I stop wantin,
murder my hope of him returnin,
strangle the pride that make me crazy!
Make me forget so I stop grievin.
Scour my skin till I stop feelin.
Take Caroline away cause I cain't be her,
take her away I cain't afford her.
Tear out my heart
Strangle my soul
Turn my to salt
A pillar of salt"
She prays to be freed from the turmoil she is feeling and turned into salt, but instead, she cries salty teardrops. So then (through the radio, which verbalizes her subtext throughout the show), she turns to her god again and asks:
"I'm lookin for answers Lord,
high above, in the clouds.
Askin you tell me now
why I cry out loud?"
Asking why, when I asked you to take my feelings away from me so I can stop feeling, you're making me cry heavy, heavy sobs? Taken that way, "how long this been goin' on?" is a way of asking "why do you act in these mysterious ways?"
At least that's how I interpret it.