A 6-year-old girl was killed by a freak accident that sent the metal shaft of a badminton racquet into her head while she vacationed with her family in Maine. Lucy Morgan was watching her siblings play badminton at a lakefront cottage in Limerick on June 1 when her 10-year-old brother’s racquet broke during a downward swing, dislodging the aluminum shaft from the wooden handle, according to reports. The shaft flew through the air and pierced Lucy’s skull. She was breathing but unresponsive when paramedics rushed her to a local hospital. The girl, from Hardyston, New Jersey, was then flown by h…