Scara Rose, The Warrior

Three way crossover: OUAT/Criminal Minds/Pirates Of The Caribbean

While they're in the Underworld to save Hook, a secret comes to light. A secret that Rumplestiltskin has kept hidden for so long. Snow and Charming have another child. She's Emma Swan's little sister, she's the Warrior. They decide to make it their mission to find her and bring her home.
There's just one problem...

She died
She's in the underworld