As she was now, Shin seemed quite sluggish by comparison. From her perspective, the gears of the world had considerably slowed, such that the birds in the sky seemed to be swimming through molases. She was quite ready for an assault on any front, especially if it was coming at her from her, er... front. In terms of relative time, the claw was only going slightly above the speed limit.

With the benefit of a dual-mind system so too came the boons of a body tailored for two. One of her parents happened to be a Guardian Edge, a being exercising total control over its material form. That included her own momentum, which may have helped explain some of Ishtalle's non-newtonian feats. She'd slow just enough to properly align herself. With a solid somersault off her air-highway she'd flip over the incoming claw. Her locks trailing behind her would become a barrier between whatever she left exposed in the meneuver and the claw-staff, flash-hardening into a rigidly solid singular mass. With a powerful kick off an air barrier she'd close the distance with a speed that gravity simply wouldn't allow.

Oh that's right. She had a few swords to retrieve, didn't she? Just as they were enveloped, the entire family would sublimate into a gas and naturally effuse through the liquid medium as gases were wont to do. Given Ishtalle's proactive nature, it would be quite close to an instantaneous process. All would rejoin Crystalle in her inhumanly fast descent by the same means; rapidly re-solidifying outside the spears. 

Lead by the needle-thin point of her sword, she discharged sky blue ethereal lightning through contact as she ground it into his shield with such strength that she would be juggled several inches into the air if it did not break. Given the staffs spiritual nature, it acted as a superb (super)naturally conducting material. This was hand tailored, cooked up by Ishtalle after having deduced the spiritual component of it through physical engagements. With the speed of a bolt it would course through the entirety of the Hydra, dissolving whatever metaphysical bonds held it together, and even Shin if he insisted on maintaining his grasp of it. 

With his weapon hopefully out of order, the Hydra would subsequently collapse or dissipate, logic withstanding. This would leave both of them free-falling to the earth. However, only one of them would be positioned above the other, and only one of them would be poised to run the other through with her divine blade.