Who said "I've hurt too many people."?

This quote is attributed to Elsa.

I've hurt too many people. - Elsa

"I've hurt too many people."

Elsa

"Let it go, let it go. Can't hold it back anymore."

"Some people are worth melting for."

"You can't marry a man you just met."

"I can't control it. I don't know how."