You told her that you were interested in going further with her, but that you had a little something about yourself that might spice it up. "A condition? Ooh, like a rule?" Something like that, you told her, before telling her to keep her eyes on you. Making sure she wasn't looking at the hand in your pocket, you activated the shrink ray and shrunk down, soon becoming barely as tall as her pinkie toe.
"Huh?" She took a few moments to look around in confusion, before peering down. "Oh! Is this what your condition is? Ohmygosh, you got tiny now! How adorable!" You agreed with her assumption, and told her that while shrinking down like this didn't last forever (a lie, obvs), she could extend how long you were tiny. "Ooh, really? Like, how?" It was simple, she just had to put you...