If Queen Serenity went to the Cauldron directly to have her daughter reincarnated, then why did she take only her daughter's?
Couldn't she take those of the Inners as well who died alongside?
Did it happen before or after Saturn killed the remnants of the Silver Millennium?
So, Queen Serenity left them to die?
Like you said, if everyone else got reincarnated without having to have someone directly demand an audience before the Guardian Cosmos, why did Queen Serenity?
But the most important question, if this is indeed after the fall of the Silver Millennium, how in the world did Queen Serenity die?
She looks perfectly fine!
The more 'lore' there is, the more nonsensical everything is.