Jenelle Evans' mom, Barbara Evans, has filed for emergency custody of her 16-year-old grandson, Jace, after he allegedly pulled a gun on her and threatened to shoot both himself and Barbara. The filings were made following news that Jace is now in a mental health facility. Jenelle's rep confirmed that she is still trying to find the best facility for Jace's needs. Neither Jenelle nor Barbara immediately responded to requests for comment.