DALLAS - This past weekend, one Terrell Walmart shopper snapped a photo of a checkout cashier whose face she found familiar. Hours later, her suspicions were confirmed. She had just encountered one of the most notorious characters in North Texas of the past decade: Dena Schlosser, the former Collin County mother who in 2004, killed her baby by cutting off her arms during a so-called religious frenzy. She was found not guilty by reason of insanity, committed to a mental institution, released in 2008, and recommitted to the state hospital in Terrell in 2010. In late June, she was hired...