How to pronounce “startle”(noun) in English

couldn't touch it. They were supposed to stand there like dumb monkeys and watch it flow on by."Lolo?" The voice catches him by surprise. Maggie startles and groans and lunges for the mesa edge before Lolo can rein her around. The camel's great padded feet scuffle dust andLolo flails for his shotgun where it nestles in a scabbard at the camel's side. He forces Maggie to turn, shotgun half-drawn, barely holding onto his seat and swearing.