Gus looked at her with a kind smile and nodded. "Good, good. Most kids these days aren't made of stronger stuff." He patted her shoulder and lifted a bottle, opening it before attaching a rubber hose attached to the body to a sort of small hand pump. "You will operate this slowly. It puts this liquid into the body." He swished the liquid around for her to see before pouring it into a part of the device and closing it to limit the fumes. "Ready? It's like this." He showed her by slowly turning the wheel and pointed at the bubbles appearing in the jar as the liquid was going through the machine. "Just at this speed, if it rush it, there could be damage.'