HAMPTON — Jill St. Cyr climbed through her window onto the deck of her Ashworth Avenue apartment and leapt eight feet down to the top of an attached laundromat, escaping the flames of a blaze creeping toward her apartment. “I just went for it,” said St. Cyr, 47, who was using crutches Friday, recovering from the sprained ankle caused by the leap from her third-floor unit the night before.