Inside the walls, the battles had been settled and the Alterrans were just rounding up the enemies who trespassed their land.
A lot of the more powerful players inside went outside to assist, and this included Althea. It so happened she had an idea where her husband was stationed, and she had a report from those watching from the battlement.
Although there was no clear sight due to the forest canopies, the two were making enough movements that they could approximate the area they were heading toward.
Positioning herself in the direction where Baltimore was going, she used [Earth Sense] to have a better idea of what was happening. Her husband was very nearly about to capture Baltimore, but there was still a small chance he would escape by virtue of his level and skills, so Althea opted to help out in whatever way she could.
She made a rough calculation and used the last bit of mana she had to hit him.