Source: Sasun Bughdaryan / Getty A Muncie woman is facing felony charges after authorities say she left two children alone in a vehicle during extreme heat while she went inside a Walmart. According to court documents, 35-year-old Lillian Acosta was arrested Tuesday after Walmart security alerted Muncie police that two children had been left unattended inside a silver Dodge Journey. Security personnel reported the children had been alone in the …