Mary Potter and The Philosopher's Stone (Harry Potter's Transgender Twin Sister)

Halloween

*the great hall Halloween feast*
"Where's Hermione, and my sister"  asked Harry.
"Parvati Patil said that she wouldn't come out of the girl's bathroom. She said that she'd been in there all afternoon...crying, and Mary and Roxy are in there with her" said Neville.
Harry glanced at Ron with a disapproving look on his face; Ron shrugged. Suddenly, Professor Quirrell came running into the Great Hall in panic.
"TROLL! IN THE DUNGEON! T-TROOLLL IN THE DUNGEON" Quirrell shouted.
Dumbledore rose from his seat in concern. Everyone looked at Quirrell and he stops and there was utter silence. 
"Thought you ought to know" said Quirrell. Then he passed out. The room was silent for a moment, and then everyone freaked out, screaming and running. "SILLLLLEEENNNNCEEEEE" bellowed Dumbledore. 
Everyone stopped and calmed down. 
"Everyone will please, not panic. Now, Prefects will lead their houses back to the dormitories. Teachers will follow me to the dungeons" instructed Dumbledore.

"Gryffindors, keep up please. And stay alert" said Percy
"How could a troll get in" Harry asked Ron
"Not by itself. Trolls are really stupid. Probably people playing jokes" Ron replied. Suddenly, Harry stopped and pulled Ron aside. "What"
"The girls, they don't know" exclaimed Harry.
The two separated themselves from the crowd. They ran down corridors. They started running down a hall when they stopped, because there was a grunting noise and a large shadow on the wall.
"I think the troll's left the dungeon" said Ron, fear in his eyes.
Harry pulled Ron into a doorway, they peered out to see a large, ugly troll thunk by into a room.
"It’s going into the Girl's Bathroom, my sister's in there" said Harry.
In the bathroom, Hermione, Roxy and Mary emerged from a stall, wiping their eyes. They stopped when they saw something. The troll was standing there. They all backed up, into the stall just as the troll raised its club and smashed the top part of the stalls. The girls screamed. Harry and Ron came bursting in.
"Girls, move" shouted Harry.
The troll smashed the remaining stalls.
"Help! Help" cried Mary. The boys started throwing wood pieces at the troll.
"Hey, pea brain" shouted Ron, then he threw wood and hit the troll on the head. The girls escaped from the stalls to under a sink, but the troll saw them and went to smash them. It cracks the sink and barely misses them. Harry cringed.
"Ahhh! Help" shouted Roxy
Harry got out his wand. He ran forward and grabbed the troll's club, and was lifted up.
"Whooa! Whoa, whoa" Harry cried. He landed on the troll's head, and was hurled forward, then back, and his wand shot up the troll's nose.
"Ew" said Ron
Ron and Hermione were momentarily disgusted by Harry’s wand in the troll’s nose. The troll snorted, and whipped around.
The troll got Harry off it's head and was holding him by one leg, upside down.
"Do something" Harry shouted to Ron.

"What" asked Ron. The the troll swiped at Harry repeatedly.
"Anything! Hurry up" shouted Harry.
Ron grabbed his wand. Under the sink, Hermione waved her hand.
"Swish and flick" said Hermione.
"Wingardium Leviosa" shouted Ron. The club was lifted out of the troll's hand and hovered above its head. The troll looked up, confused, just as the club came crashing back down. 
"Cool" exclaimed Ron as the hits the troll's head and the troll wavers, then drops Harry, who crawls away, and slowly comes crashing down, knocking itself out. The girls approached carefully.
"Is it...dead" asked Mary
"I don't think so. Just knocked out" said Harry. He grabbed his wand...which is covered in snot. 
"Ew. Troll bogies"
Harry wiped his wand on his robes. Suddenly, McGonagall, Snape and Quirrell came rushing in. They all gasped at the knocked out troll.
"Oh! Oh, my goodness! E-Explain yourselves, all of you" said Professor McGonagall.
"Well, what it is..." the boys started.
"It's our fault, Professor" said Hermione.
The teachers, Ron and Harry looked at her.
"Miss Granger" asked Professor McGonagall
"We went looking for the troll" said Mary
"We'd read about them and thought I could handle it" said Roxy
"But we were wrong" said Hermione
"If Harry and Ron hadn't come and found us..." Mary started
"We'd probably be..." Roxy continued
"dead" Hermione finished.
"Be that as it may be...it was an extremely foolish thing to do" said Professor McGonagall. Harry noticed Snape's leg, which had the trousers' leg torn and a large cut on it. Snape noticed and covered it up, glaring at Harry. 
"I would have expected more rational behavior on your part, Girls. Ten points will be taken from each of you for your serious lack of judgment." She turned to Harry and Ron "As for you two gentlemen I just hope you realize how fortunate you are. Not many students could take on a fully grown mountain troll and live to tell the tale. Twenty points...will be awarded to each of you, For sheer dumb luck" said Professor McGonagall.
Snape and McGonagall left the bathroom.
"Perhaps you ought to go ...M-might wake up ...heh" said Professor Quirrell.
The five exited the bathroom. Quirrell looked at the unconscious troll. The troll growled, seemingly going to wake up. "Ahh! Hehe...."
👦🏻⚡👧🏻
The five are walking back to the Gryffindor Common Room through the corridor.
"Thanks for getting us out of trouble like that" said Harry.
"Mind you, I mean, we did save their lives" said Ron.
"Mind you, we didn't need saving if you hadn't insulted Hermione" said Mary, glaring at Ron.
Hermione looked at Ron.
"What are friends for" asked Ron.
They all grin at each other as they carried on through the corridor.