Astrum (fem!Harry Potter)

"Potter, Cassiopeia!"
Cassy fiddled nervously with her fingers as her name was called. She distanced herself from the first years clumped at the entrance to the Great Hall and shuffled up to the sorting hat. It was an old raggedy thing, and she winced at she shoved down on top of her head.
"Hmm," a small voice spoke suddenly in her ear, "Difficult. Very difficult. Plenty of courage, I see. Not a bad mind either. There's talent, ah my goodness, yes. And a nice thirst to prove yourself, now that's interesting... So where shall I put you?"
"Not Slytherin, not Slytherin."
"Not Slytherin, eh? Ah, I see that Mr. Malfoy has made quite the impression on you. Well, I can't have just one student ruining the whole house for you." Cassy began another feeble protest, but the voice cut her off, "None of that, none of that. My decision is final."
Accompanying the sinking feeling in her gut, the hat opened the seam ripped into his brim and announced, "SLYTHERIN!"

In which Cassiopeia fails at persuading the sorting hat, and things turn out very differently.

Slytherin Harry, Female Harry Potter, Grey Harry Potter, Tomarry
Also, unlike most Wattpad authors, I have very long chapters instead of multiple short ones.
Current word count: 32,148 or story, not including authors notes