When Blanca is serving food in the yard, a woman standing in line with a bikini top and panties disappears and reappears when the camera changes angles.
Maria tells Pidge and Ouija that her extra time (three to five years recommended by Piscatella in season four) never went through and she could get home to her daughter while she is "still pissing in diapers." In season two she says her original sentence was six years. The series started within the first nine months of her sentence and only about six months has passed since then, so she should still have four to five years remaining.