Her look of surprise makes you worry that she's noticed, but she oddly shrugs it off and returns to watching the TV. You give a sigh of relief and approach the couch as it is getting harder to see. Her socks finally fall to the floor, having reached the point where they were unable to grip her tiny feet anymore. The neck of her t-shirt soon gives way and it collapses, leaving her tiny nude upper half exposed. By this point her short shorts are off as well, with her lower half having shrunk into the lower part of her shirt. The shrinking ends when she reaches around 5 inches tall. If anyone passes by, they would likely see a barbie doll, sitting in some too-large clothes.
You place your head on the edge of the couch and examine the tiny girl. Her proportions have remained the same, so even at 5 inches her chest is still relatively curvaceous. Too curious to stop yourself, you reach forward and rub her tits with your hand, common sense be damned. They feel soft, and luckily for you, she remains oblivious thanks to the wand. Along with a tent forming in your pants, this gives you further cause to go on, and you ready the wand.
What do you do next?