I think the reason the quality falls off so sharply is because the author either ran out of source material to adapt or the source material diverged too far to be useful anymore. I played through from the beginning over the last few days and there is such a strong sense of familiarity to the story that I'm pretty well convinced that this isn't just heavily influenced by V:TM. If someone with more patience and access than me went digging, you would probably find something remarkably similar to this story in an old White Wolf book from the 91-98 pre-Revised era.
As for why Calisto got chumped so easily, in World of Darkness terms I'd guess she's probably a 6th generation (maaaybe 7th) of some extremely exotic lineage. Like a surviving Salubri or Cappadocian in the modern era, not literally one of those bloodlines since this isn't actually WoD but that level of rarity. Her low generation accounts for her basically being queen shit relative to all the plebes jockeying for power under the prince, and her low generation + exotic bloodline explains why the MC develops so fast and with such a strangely wide range of powers. But even a freshly woken methuselah would be far beyond her in power.
That being said, I do recall a couple mentions of Inanna earlier in the story. Inanna was her name in Mesopotamian culture but the Akkadians and Babylonians called her Ishtar and in WoD the Toreador antediluvian Arikel was also known as Ishtar and was the twin sibling of Malkav. Now normally the awakening of an antediluvian is a world altering event let alone two at once but my guess is that's what the two female vampires are based on, Arikel and a gender-bent Malkav.
As for why Calisto got chumped so easily, in World of Darkness terms I'd guess she's probably a 6th generation (maaaybe 7th) of some extremely exotic lineage. Like a surviving Salubri or Cappadocian in the modern era, not literally one of those bloodlines since this isn't actually WoD but that level of rarity. Her low generation accounts for her basically being queen shit relative to all the plebes jockeying for power under the prince, and her low generation + exotic bloodline explains why the MC develops so fast and with such a strangely wide range of powers. But even a freshly woken methuselah would be far beyond her in power.
That being said, I do recall a couple mentions of Inanna earlier in the story. Inanna was her name in Mesopotamian culture but the Akkadians and Babylonians called her Ishtar and in WoD the Toreador antediluvian Arikel was also known as Ishtar and was the twin sibling of Malkav. Now normally the awakening of an antediluvian is a world altering event let alone two at once but my guess is that's what the two female vampires are based on, Arikel and a gender-bent Malkav.