When someone is exhilarated, he/she is full of joy, happiness, and excitement. It also means that someone is in an extremely good mood. And this can be expressed in various ways for others to observe.
From the excerpt, she was excited and in a good mood to play in a manner that makes her to feel the euphoria of the moment. She was described to be full of joy by playing quick, light and loose.
The auroras in Earth's Northern Hemisphere are called the aurora borealis. Their southern counterpart, which light up the Antarctic skies in the Southern Hemisphere, are known as the aurora australis
