There'll Be Peace actually is going to tell the story about Thorn's acid scarring. Her mindset, where her heart and head was at the time.
As a heads up, this is not general, public knowledge, not the deep down of it. If your character does not have permission to be on the grounds of Roan's Villa, your character will not hear this, unless otherwise stated. Also, if your character, or your character's direct agent is not in the near vicinity of where in the courtyard the redneck is sitting and sharing, your character will not hear, will not know.
While, as with everything, if your character asks her directly, she will share. It may not be the whole of the tale, but she will share some of it.