I also think that the zip ties were perhaps used to help with the transport. This could be Why Fd used zip ties that were 3 feet long. Keeping the body tight would be much better than a body with arms and legs flopping around, when he is putting her in and out of vehicles. I know a sleeping child feels heavier and harder to manage when picking them up, than if they are awake. It would be the same with an adult. Please, NO PUN INTENDED, but this is the definition of dead weight. IMO.