A prominent Long Island pediatrician was killed when she tumbled out of a moving Airstream trailer — still clutching the door’s handle — and onto an upstate highway during a family road trip over the weekend, according to state police and kin. Dr. Monika Woroniecka — a 58-year-old married mom and children’s allergy and immunology specialist with Stony Brook Medicine — was in the 2024 silver trailer with other family members when she fell through the door shortly after 3 p.m. and onto State Route 12E in Watertown in a freak accident, said police and family. Woroniecka’s husband, Robert, 59,...