Hey guys, so I have this idea and I was wondering where I should put it, it's about this girl who goes 'missing' and this 'new' girl shows up, nobody at Hogwarts no the secrets that the '2' holds. one is that they are a different species (there parents are demigods ever since way back, I don't know what that be called) but she end up telling all her secrets(they are not that bad). Should I put it in crossover with Percy Jackson or just here because there will be no demigods in it besides my character.
Should I have there be twins and one of them goes missing, but was found dead and the other twin finally came to Hogwarts and found out her sister is missing and goes looking for and finds her body where no one knows about. Or should it be the girl that goes 'missing' and the 'new' girl are the same person.
Also if your looking for story ideas, just pm me, because I have a lot in my head