Her curiosity was definitely piqued, but her priorities hadn't changed. Technology, magic, whatever. As long as it helped.
She set the thing 'right' in her hands, at least the way she thought was right- Sam had held it this way, in any case. "So... I write a message on this thing-" Gretel tentatively touched the surface the way she'd seen him do, which somehow produced a table of letters. She brought it closer in near awestruck fascination when the device made a distinctly strange noise, which she visibly flinched at.
Suddenly there, beside the table of letters was an image of herself, looking dumbly head on, like a mirror. Her head tipped deeply toward one shoulder. She tilted the PDA in the opposite direction.