I really like the idea of a Mary Riddle.

There's tons of fem!Harry out. What about Tom.

Being a girl had its perks. Being a girl living in a dorm with other girls had even more perks. Being a girl in a dorm with other girls who're anticipated future socialites in a House famed for its ambition, cunning, and resourcefulness was a downright advantage.

Mary wasn't one for gossiping but she knew the hottest and most hush hush rumours.

The story about the Room of Requirements came as just a footnote but something that caught her attention.

"-says they did the deed."

"No. Way! I mean, that's just disgraceful!" Miller's red cheeks and sparkling eyes didn't give much credibility to her sneer.

"But where? Parkinson's a Ravenclaw and Abbott's a Slytherin. They didn't get caught, did they, so it mustn't be either common room. Or room."

"Where, isn't the point! They're still minors and Parkinson's three years younger than him!" Crabbe practically shrieked.

"And isn't that so hot."

Corner tilted her head, humming, "It's practically a Hogwarts lore. People say there's a magical room on the seventh floor that appears with whatever you need if you walk in front of it three times."

She got the look that deserved. "Annie, honey, that's so specific of you. If you haven't noticed, we're in a magical school. What room isn't magical?"

"And that's a bit too much. Isn't it? Sounds too good to be true and all that."

"Sounds like from someone who was trying too hard. Let me guess, Nott told you that didn't he?"

"Ooooh! Are you going to do the deed with him too?"

"What?! That's disgusting you guys!"

"You're blushing!"

"I'm mortified!"

"And oooooh, looky here guys. Riddle's as red as a berry! Who would've thought it'd only take things like that for us to get you off your books."

Okay, so maybe her curiosity this time wasn't directed to something more 'Dark Lady'ish. But she was a teenaged girl, she was free to be curious about such things. She was a healthy twelve year old girl. A curious twelve year old girl. She's human too, certain flaws can be excused- no, she was not being defensive.

And she did get the Room of Requirements for it.

(Turns out, Nott had just really been trying to impress a girl with his 'knowledge' and never actually checked for it's validity. And no, Parkinson and Abbott never did any deed.)