Louise saw Hailey coming out of the hospital where Randall is confined into. She was hiding behind the vase, concealing every parts of her hair, and hugged the picture Louise secured as her copy.
A few minutes before, Louise followed Hailey's trip. To be certain, the first time she regained her vision was the moment she saw the picture in the tablet. The shape of his side face, his cap, and even the familiar jacket, Louise has known it is Leo.
That time around, Hailey must be thinking it, too. No doubt, they had the same brain, and if they ever got into a fight inside the hospital, they didn't deserve to get watched at. Plus, they have to be careful on disclosing their identities to the crowd.
Louise has never been that secretive. Right after she accepted the commander's position and met Randall, Louise knew what she intended to avoid was the one fated for her. Hailey must have read it well.