The beam doesn't exactly hit you, it sails over your shoulder and reflects back immediately. You look backwards to see what happened and see that there is a mirror directly behind you. Putting two and two together you slowly turn back and no longer see the student. Just a pile of her clothing lying on the floor, with a moving bulge beneath it. The bump seems to travel through the clothes and out towards one of the sleeves of her shirt, until it's exposed to the light. There, clear as day, stands the girl who tried to shoot you with the ray gun, only she's now no more than 5 inches tall. She looks around the room for a second, trying to take it all in, before focusing on you directly. She lets out a small shriek of surprise, holding her hands up to her mouth to stop herself. She takes a few deep breaths and you hear her little voice squeak out "Okay. Okay. Uh, this is bad. This is really bad and I am really small." She steps over her shirt and onto the cold linoleum of the laboratory floor, inching her way over to you. You don't really do much, you're too shocked yourself. She manages to wave up to you from the ground and meekly shout up "Hey... A little help?"
You slowly drop to your knees and lay your palm flat on the ground for her to climb on to. She scampers over your fingers and centers herself in your palm, crouching down as she's lifted off the ground. When you have her at about chest level, she raises up to her full height, finally comfortable with the ground she's standing on, and throws her arms up in frustration. You can't help but marvel at how adorable she looks standing in your hand. Like a little doll, perfectly proportional, only living and breathing. You instinctively poke her with your free hand, almost to prove to yourself that this is real, and she laughs a little bit at your invasive touch. She waves away your massive finger and says "Stop that. That tickles my... Oh my god!" In a sudden burst of realization she curls up slightly, shielding her bare breasts and crotch from your view. "This is so... SO embarassing." She blushes hard as she straightens back up, and you're amazed at how well she's handling the situation. She doesn't seem scared or humiliated, just frustrated at not only how the experiment has played out so far, but now she's naked in front of someone who was SUPPOSED to be her test subject.
The little asian doll paces slowly across your palm, her miniature footsteps tickling you slightly as she moves.. When she faces away from you, you can't help but stare at her cute little bare behind. She thinks for a second and says "Well first thing's first, i have to get back to normal size. Then i have to get some clothes on and try to forget that this ever happened.
Would you mind helping me, it's not like i can use the controls when i'm this small." You look down at her clothes and see what she means: The shrink ray she was using hasn't gotten small with her. It's your size.