A Boston College student, 20, who lost her footing and was dragged underneath a moving train suffered multiple injuries in what her father has called a 'preventable' accident.Ava Harlow is undergoing treatment at Brigham and Women's Hospital after she suffered a fractured skull, crushed pelvis, broken arms, cuts to her face, and broke one leg and eVDEN EVE NakliYaT lost part of her other leg.The Bay...