Shortly after 3 a.m. on April 6, police say, Anna Reisopoulos's lover, Nicole Chuminski, doused the front entryway of Reisopoulos's house in South Boston and set it ablaze. Acia Johnson, 14, was trapped with her sister Sophia, 3, on the third floor. They died in Acia's bedroom closet, where their remains were found entwined in an embrace.