The effects are instantaneous: You barely have time to react after the beam hits your chest, before you find yourself sinking into the ground. With every passing second, Karen becomes more and more of an amazon. Then a giant. Then a skyscraper. Your vision is a bit obstructed by the huge blades of grass that surround you, but far above you, you can see the gigantic redhead searching through the grass, obviously looking for any signs of life. You decide to make your way through the blades, towards Karen's huge form. You finally make some progress after a minute or so, coming across a gigantic, bare foot. Karen did always have pretty feet, and seeing them at this angle is definitely filling your head with some ideas, but none of them will come to light until she spots you. So you go to her big and second toe, climbing atop them while simultaneously marvelling at the minute details of her pretty pink pedicure. You jump up and down on the soft skin of the top of her foot, until she looks down to see what's causing the strange sensation. She brushes some of her long fiery hair out of her field of vision, letting her eyes go wide and her jaw hang open at what she sees. She is shocked beyond words, and you can't help but match her expression. Looking at Karen at this size is awe-inspiring. She is a building of a woman unto herself, and she is quite beautiful, even the perspective of being the size of a mouse, standing on her bare foot.
You are snapped out of your trance harshly as the foot you're standing on tilts forward, causing you to tumble to the ground. Karen lets out a massive groan and suddenly lifts the foot off the ground to stomp it down once, causing you to roll a bit further away from her. The giantess is looking down at you with a wicked, fierce scowl, and her face is turning a much deeper shade of red than it was before. "YOU...YOU LITTLE BASTARD! YOU WERE GOING TO SHRINK ME?! WHAT, WERE YOU GOING TO JUST KEEP ME LIKE SOME TINY LIVING DOLL? I CAN'T BELIEVE YOU!" You start to crawl backwards to get away, only to find yourself bumping into her massive sandal. It stands the size of a house next to you, really giving you a perspective on how small you've become. But you didn't really need it, as Karen's giant body loomed over you like a vengeful, angry goddess. She looks at the gun and smirks whispering "A GIRL COULD DO A LOT OF DAMAGE WITH THIS LITTLE THING. BUT BEFORE I DO THAT, I'LL HAVE TO GET RID OF YOU, NOW WON'T I?" You brace yourself for her wrath, not knowing how she plans to "get rid of you", but you know that while you're this small, and she's that angry, it won't be pleasant.