You must of seemed like a princess to the officer that stopped you.
Whether one gets cited for a traffic offense often depends on the officers mood and the projected appearance of the of the auto and the passengers and driver. If all of this indicates a clean good family like situation with young ones and the driver and others smile and are cordial rather than defensive and surly things will always go better. You may still get cited but for a lesser or lower speed than the actual speed.
Cars get pulled over and stopped for things as little as a license plate that is wired on instead of bolted on. Why? This indicates a cavalier attitude to the officer and also is an indication of a possibly stolen auto or a switch of plates. It is another situation of first impressions. Like the first time you meet some one and shake hands, there is an impression of that person.