Last night it was pretty windy and I was pitching. Runners on 1st and 2nd. Guy hits a pop up about 50 ft that would have landed just behind me with no wind. As it goes up, I realize it is going to tail back towards the catcher, so I don't move. She steps out from behind the plate almost half way to me. Then the ump calls "Infield Fly, unless it is foul". I let her attempt to field it (she completely misses it) and it shoots across the plate into foul territory... I realize that if it had been over foul territory that it would not have been an IF, but this ball was over fair territory and I easily could have caught it by just calling her off. Any input would be greatly appreciated.