Amanda Bynes remains in a mental health hospital, nearly three weeks after being placed under a psychiatric hold, according to . ET has reached out to Bynes' rep.The outlet reports that while Bynes' release date is still undetermined, those around her are formulating an outpatient treatment place to make sure she stays on the right path, when the time comes. sources say that Bynes and the medical staff she's working with are taking her treatment on a week-by-week basis.