Tease her

if you push the bulb of the hitachi wand just right inside her hole (so she’s clenching and bearing down on the head) and turn it on, she’ll see god i promise you. bonus points if she’s tied up and you leave it inside for a while, turning the vibrations up. she’ll squirt in minutes and won’t be able to get it out, since she’s bearing down on it like a knot, just crying and convulsing while it stimulates her continuously from the inside out. just leave her there for a bit, gagged and teary with her legs spread as the handle sticks out of her pussy, go finish some work for a bit. her pussy will be swollen and fat and glistening around the wand when you get back, and your sweet girl will probably be in subspace, taking it helplessly like a good girl