'Lullaby' quest walkthrough in Valor Mortis

In Valor Mortis, the Chapter 3 side quest "Lullaby" tasks you with soothing a crying baby's ghost. After investigating the crib to start the quest, you pick up the Weathered Key from the backyard, backtrack to the Marketplace Lantern, cross the river to collect the toy, and place it in the crib. Completing the quest rewards 1,500 catalysts and the Tomorrow's Promise amber.