After the plane was struck, Xinghe had her first experience of free-falling and how fast it was. It happened so quickly that a normal human wouldn't have the reflexes to do anything else but careen down following the plane, pulled by gravity. Of course, Mubai was not someone normal. Xinghe couldn't understand how he managed to fit a parachute on her in such a short and high-tension moment. Not only that, he even managed to open the plane door and shoved her out, giving her a chance at survival.
Xinghe's thoughts couldn't keep up with his actions. She was still reeling from the attack when she was pushed out the door. She didn't even have the chance to look at him one last time. Her mind couldn't work out the possibility that this might be the last time they saw each other.