Now she’ll pay. A crazed shopper chased a woman through a thrift store in Kentucky with a knife then viciously plunged it into her chest and bit her — declaring the victim “got what she came for,” according to cops who arrested her. Madison Hinchey, 30, allegedly flipped out inside the Goodwill shop in Murray on April 21 — screaming and whacking a worker who tried to intervene with a metal shovel, police said in a press release. Hinchey ran into the store at around 1:35 p.m., pulled a large knife from her purse and chased the other woman through racks of second-hand clothing into a loading dock, according to the Murray Police Department. “[She] got what she came for,” Madison Hinchey allegedly hissed to cops. Murray Police Department She stabbed the victim once in the chest then chomped down on her — before hitting an employee with a metal snow shovel, according to police.…