Attempts at stealing the Black Crystal - or anything - from Kalki all failed. That said, in the grand scheme of things it didn't really matter. Indeed, Kalki made no attempts at defending herself this time around, nor did she phase out when the Heroes of Light attacked her. Every single skills directed toward Kalki hit her, leaving little more than a bloody corpse that collapsed onto the floor before she could answer any question or do anything. Unlike Garland, it seemed Kalki had whatsoever no defenses aside from her phasing ability and whoever had delivered the final blow was unclear, but there is only a certainty:

Kalki is dead.

The black crystals fell onto the ground as well, a dark and purple aura surrounding it as it rolled to rest against the corpse of the fallen avatar. A dreadful sensation still emanated from it and anyone approaching it would feel compelled to run away-- And should they fight the sensation, they would find their hand burning upon attempting to grab it.

The stairs leading back to Pandaemonium and the Imperial City re-appeared shortly after Kalki met her demise. Similarly, all spells or limit breaks allowing for a quick escape were now working as well.