Welcome to the RPC! You can find a collection of Au Ra lore in this post. Hopefully that will help! ^^
As for an Au Ra being raised by House Fortemps, it'd be something that was incredibly rare. Until relatively recently, Ishgardians killed what few Auri immigrants came to their lands mistaking them for dragons. Tolerance would've come more recently, which is a theme maybe you can explore in your backstory? Why a Raen is so far from their native homelands, how they came to be there, and what prejudice she had to endure in a city so very distant culturally and geographically from her own.
As for an Au Ra being raised by House Fortemps, it'd be something that was incredibly rare. Until relatively recently, Ishgardians killed what few Auri immigrants came to their lands mistaking them for dragons. Tolerance would've come more recently, which is a theme maybe you can explore in your backstory? Why a Raen is so far from their native homelands, how they came to be there, and what prejudice she had to endure in a city so very distant culturally and geographically from her own.
