A Michigan woman is in custody after police allege she set her house on fire with her three children inside, killing her 12-year-old daughter. The victim, Shamiya Stewart, died two days after the alleged attack in her Grand Rapids, Mich., home, the Associated Press reported. Her siblings, a 10-year-old and a 7-year-old, both survived. Their mother, 46-year-old Roconda Singleton, was …