FLAP~ FLAP!
Each flap of Jane's wings created a powerful sonic wave. Her first flap broke through the sound barrier and made the sound of a sonic boom.
However, each flap generated two sonic booms due to the pressure from both ends, but the difference between the two sonic booms was barely noticeable because the time between the first and the second sonic boom was shorter than a mili-second as she was flying with speed faster than the sound.
The trails created by her aura were a sharp straight line, but the sonic wave created by her wings would break the straight line and scatter in, making it seem like the aurora. But before that, the trail of her aura would look like a shooting star in the sky.
Just like how Rias felt that Jane didn't put any effort into having a relationship with Rudy, Jane felt the same. After all, their relationship started with lust and turned into love.