Collin Gosselin was 12 the last time he saw his mother. He’d been a patient at Fairmount Behavioral Health System, a psychiatric hospital, for more than a year when she visited him. By that point, their relationship was severely strained. According to Collin, Kate Gosselin had been physically and emotionally abusive to him for as long as he could remember, abuse he claims intensified when he rebelled against filming the family’s wildly popular TLC series Jon & Kate Plus 8. The reality show, which debuted in 2007, followed Kate and her then-husband, Jon Gosselin, as they navigated life rais...