Something you can try, give her some free run of the house or a room while you're in it (as long as the room is iggy-proof and/or you can keep an eye on her). High traffic areas are good but what I find works even better if possible is to have their enclosure in a spot where you are for long stretches (near my desk or chair usually is best for me). Just seeing people go back and forth can flip them out, but if you can have them in a relatively quiet place but yet a place where you are often so they can get comfortable just having you around that often works better. I have had iguanas that never tamed though, it happens...with some they just never lose the fear. It's somewhat rare though...I've kept many larger herps (iguanas, monitors, tegus, boids, snapping turtles) and I've only had 2 (one iguana and a salvator) that never at least reached the tolerance stage with me.