Gonna give it a shot, then...
In the past, our subject had eaten a meal, it doesn't matter what it was. When she ate it, something horrible happened afterward, either to her or someone else she knew. Time passed, and a friend suggested to her to try an iguana steak, but told her it tasted different than it really did. Girl goes over to restaurant, orders, steak, has a bite. Her memory of the event comes to her when she tastes the steak... Panicked and distressed, the girl runs outside and jumps into traffic to escape the pain.