If the ball is batted fair (which is the case here). Ump calls infield fly, it's an out. Player does not make a play for the ball to catch it on the bounce. It rolls foul after contacting pitcher's plate. She's out.
I believe once he makes the call, the out is an out. The batted fly is a fair ball. It's only foul after contact and after IF ruled
The umpire is actually told to say "Infield Fly. Batter is out if fair".