Selim's act of running away gave Kiyo the motivation that she needed. Soelbe might have been able to violate the relic rules thanks to the fact it was a ghost, but using an Eldritch Chain on her would do nothing to impede her movement in an effective area thanks to the fact that the active area of terrain was so small. Additionally, none of the Soelbe's light magic could actually affect Kiyo thanks to the protection of Akasha's Edicts. The only power that Soelbe held here was that over Mythari, and Kiyo's gambit left no room for Soelbe's interference. She had to execute this strategy correctly, and execute it quickly, or she would simply forfeit, recognising that the battle of attrition was not one she could win. After all, this was primarily to test Selim's strength, and Kiyo was already convinced of his tactical prowess and physical might, despite the fact that he was disarmed.

Kiyo sped up her chase, accelerating as quickly as she could, and used a single With the Wind to close the distance with her increased momentum. Being able to move the five feet that she had initially stumbled away put her much closer to Selim than before, and thanks to their earlier proximity it was, despite his head start, still just barely in melee distance--though not quite enough that Kiyo felt herself being able to forcibly move him as she had before. She also wasn't sure that she could simply out-speed him, and catch up enough to guarantee her hit. Knowing that she had such limited time and intrinsic disadvantage in a battle of attrition, Kiyo did not feel compelled to conserve her resources in the slightest--though it would be a second before she could dash again, she used Soaring Gusts four feet ahead of Selim and simultaneously had Mythari use another Soaring Gusts just to the right of that in order to disincentivise his dodging right (which would effectively leave him with no recourse and guarantee her hit).

Given that Mythari was also heading towards the pair at its maximum speed, which was not inconsiderable, Kiyo begun the process of executing her final gambit. Should Selim fall into range--and with no recourse as to where he could move, other than back towards Kiyo or southwesterly towards his Soelbe (which would leave him in range for Kiyo's gambit regardless), Kiyo used Mythari's positioning to create her last Wall directly below Mythari, around eight feet to the left of Kiyo and Selim, and would be able to use With the Wind and Soaring Gusts together to slam Selim into it, which would likely do enough damage to put him down for the count. Even if not, Kiyo could launch a barrage of Windborn Weapons at him in order to simultaneously prevent his advance and deal the finishing blows of the battle. All of this would happen within two seconds, three at the latest, which would not give Soelbe enough time to deal enough damage to Mythari or hit the Wall with enough spells to dispel it before Selim would potentially fall prey to Kiyo's stratagem. 

All in all, Kiyo was quite convinced that the jaws were closing around Selim in this battle. If things did not unfold as she expected, and Selim displayed an exceptional stratagem to avoid hers, Kiyo would either forfeit on the spot or, depending on precisely what happened, choose to continue with renewed energy thanks to an exceptional display of battle acumen.

[@Innue]