They were in a high position to watch the fallen city and that allowed them to go in a straight line for the tree, which wasn't too hard considering it was in the middle of the capital.
Mares had Felsen in his arms, who was gently holding Kristal. With everything he had, this meant physical strength, the repulsion technique, and control over wind, he jumped, covering a great part of the distance in a second.
"Good luck!"
He kept his calm at that high speed. Felsen cast a spell on him, making his gravity lighter. It should last for around six cycles, so he had more than enough time with it.
With that, he throws her with as much strength as he can towards the tree. To adjust herself, Felsen uses some spells, allowing herself to fly with all the speed Mares allowed her to get.
That approach was all but stealthy and various Void Beasts had already noticed and were going in the direction of the two.