An 8-year-old girl was killed by a lightning strike while playing in a backyard just feet away from her devastated family members. Little Kinslee Tschida’s nurse mother desperately tried to give her daughter CPR after the fatal strike in rural Illinois on Friday, July 3 — but the girl later died at the hospital from her injuries, according to Kinslee’s grieving grandfather. Kinslee was playing on a swing outside with her cousins on Friday when her uncle heard a “rumble” of thunder and told them to get off the swing and come inside the house, only about 20 feet away.…