By Charlie Jones A mum-of-two died suddenly on a flight back from the Dominican Republic leaving stunned doctors trying to figure out what happened. Reports suggest she was full of life on her holiday. Stefanie Smith’s heartbroken brother Chris Volz said: “Everything I’ve seen in videos, they had a great time.” She was flying back to Charlotte, North Carolina, when she suddenly died. The 41-year-old’s family didn’t know of any health problems she might have had and they have been left clueless as to what could have happened. The plane was forced to land in Turks and Caicos quickly because Stef…