Mary knew she'd never be able to move the couch being just a hair over three feet tall. She located the Growth vial in the box and took a swig.
She started growing on the coffee table, and immediately her right arm shot up with pain. She forgot about the wound she had wrapped up back in the bathroom. Quickly unwinding the bandage from her arm, Mary exposed her wound, which had thankfully sealed itself by now. There was still some dried blood to wipe up, but it wasn't reopening. In no time she had to crouch down just a bit to keep from hitting her head on the ceiling. At about that point, the growth stopped and she was back to about eight feet. She stepped off the coffee table and into the horde of mites on the floor. She easily pushed the couch back a few feet, though she had to fight off a serious case of the creepy-crawlies as the mites on the couch scuttled over her hands.
She gulped before plunging her hands into the sea of mites, running them along the floor through the white fuzz that served as the mites' digestion agent. After what felt like forever, her hands grazed over the Shrink vial. It was even longer after that that she was able to locate its small cork, but she was immensely relieved when she did.
She carefully stepped into the kitchen, which was another disaster area. Mites had gotten on the counter and were hovering over all the food in sight, depositing a generous amount of fuzz on them. Mary cleaned off the vial and its cork, then rejoined the two and watched it refill with its previous potion. She uncorked it again and started sprinkling it over all the mites in the kitchen. Most of them eagerly lapped up the liquid just like the mosquito did. She moved into the living room, refilling the vial as needed, and doused as many of them as she could in the potion. Before long, most of the mites had been taken care of, and she was trying to track down the more reclusive ones. It took almost an hour, but when it was finally done, Mary sighed with relief and took a single sip of the potion herself.