A Pennsylvania nurse who admitted to intentionally poisoning two dozen patients with insulin was described as “pure evil” by victims’ loved ones during her sentencing hearing this week. Heather Pressdee, 41, of Natrona Heights, Pennsylvania, pleaded guilty to three counts of first-degree murder, and 19 counts of criminal attempt to commit murder, in connection with the administration of “lethal and potentially lethal” doses of insulin to 22 patients at medical facilities in Allegheny, Armstrong, Butler, and Westmoreland counties, beginning in 2020, according to state prosecutors. Pressdee was …