Answer:
Mrs. Stetson
Step-by-step explanation:
Mrs. Stetson, her crazy neighbor, is believed to be the murdurer. Mrs. Stetson had a record of threatening and dangerous behavior. She threatened Mrs. Huffington many times, and was said to be connected to the bombing of a famous politicians house. She was on medication to control her anger, but when Mrs. Huffington was shot, she confessed to not taking the medication. Mrs. Stetson killed Mrs. Huffington.