Origin

Setting: house of three
 Daughters with a debt for their mothers to collect
 So, each toe the line
 Oh, when I go home I'm not there, no
 Because some time away still won't repair
 Wounds that we didn't make, but open
 Restlessness becomes
 A weapon that hides under my tongue
 But by the skin of my teeth
 Pity is a demon
 Coursing through the night
 Every time the door locks thrice
 Mothers will expect that their
 Daughters won't forget
 What they've sacrificed
 Leave as a villain or stay behind
 To howl as a victim who's "renounced"
 Their pride in order to nurture
 What I couldn't do
 Won't happen to you
 Clue: Every battle that presents itself
 As new fits on a parallel between
 Another child and their tender
 Selflessness becomes
 A lock and chain that keep her from
 Chasing a fantasy
 Save her; she's just a baby
 Crawling on all fours
 Eventually, she'll reach the door