Peril's theme song: "Numb" by Linkin Park

Lyrics:

"I'm tired of being what you want me to be" (Peril eventually no longer wants to kill for Scarlet)

"Caught in the undertow" (she doesn't like water)

"Every step I take is another mistake to you" (do I have to explain?)

"[can't you see you're] Holding to tightly, afraid to lose control"  (Scarlet was afraid that Peril might stop killing for her, so she gave her the black rocks)