A man has been charged over a fatal car crash that killed a 23-year-old pregnant woman and her unborn twins as well as a 17-year-old girl in Sydney’s west. Newlywed Katherine Hoang (nee Gordon) and 17-year-old driver Anh Hoang, who is also known as Belinda, were killed in the collision at Orchard Hills, near Penrith on Friday night. Katherine’s husband Bronko …