Her objective would have been to keep it as dry as possibly, to prevent leaks and odors, so, something waterproof. Space savers sound like they fit the bill. Lime dissolves okay but she was not trying to dissolve, she was trying to and apparently succeeded in hiding this right out in the open.. poor wronged woman, forced to leave er home by her the first wife, forced to live in a hotel out of suitcases which apparently contained no clothes... possibly wheeled it into an open foyer in broad daylight and at night it stayed in her hotel room until she moved back to SC in probably yet another rental car, rented under another name, 'stopped to see some people along the road', maybe... all in a day's work for an assassin, a black widow. No remorse. Zombie woman. Without empathy, sympathy or compassion.