Filch walked down the corridor, lantern in hand. He wanted desperately to find students out of bed, it was the only thing that put any excitement in these long, dreary, nights. He rounded a turn and heard a soft meow behind him. He turned and smiled.
"Mrs. Norris," he said, "A pleasure as always." The cat shot him a dirty look. "So you haven't forgiven me, eh? You know I didn't do it on purpose. It's been 17 years, can't you forget?" he said to the cat anxiously. The cat came up to him and rubbed against his legs. "I love you too," he said.
Later, as he was lying awake, Filch thought about how Mrs. Norris had come to be how she was and how she used to be. . .
It was a warm summer's day. He and Lydia were walking down a path holding hands. He pulled her under a apple tree and they shared a long kiss.
"I love you Lydia, and I hope that you can accept the fact that I have no magic," he said, staring down into her eyes.
"You know I can Argus," and they kissed again.
A few years later. . .
The couple were sitting at a table in Madam Puttyfoots. They were older now, about age 25.
"Lydia Norris, will you marry me?" he asked. He opened a box containing a modest ring with a diamond on it.
"Of course Argus, but I want to keep my maiden name," she said, but she looked a little disappointed nonetheless.
Many years later. . .
"You can never give me what I want, Argus. I know your salary is not high, but you could at least save some, instead of wasting it devising new tortures for the students. And why do you wish to torture them so? Will you do that when we have kids?" Lydia was almost crying.
"I don't want kids," Filch said, avoiding her eyes.
"Well I do, now, answer the question."
"I DON'T WANT KIDS!"
"Fine, we'll talk about it later, calm down." She sighed. "Why do you have to torture them so?"
"Because they have magic," he said.
"So you are blaming them because you don't? You are blaming them because they have what you have always wanted? You are blaming them for your being a Squib?"
"DON'T CALL ME A SQUIB!!" he yelled and drew a wand.
"Ha, you can't even work it," she scoffed, "You can't even produce sparks with it." He waved it and nothing happened. "See," she said triumphantly, "Your place is below mine."
Filch's face turned a nasty brick color and he waved it again, yelling almost exploding with rage. This time, a bolt of yellow light flew out of the end and hit Lydia. She started screaming and fell to the floor writhing in pain.
She started shrinking and at the same time growing mass amounts of brown and black hair all over her body. Her fingers shrank back into her hands and her thumbs moved up her arms. She was lost from view as her clothes became bigger than she was.
Filch ran up to her. "No, no," he said, "I didn't think anything would happen, please be alive, please be alive."
He found her buried in her clothes, breathing faintly, in the form of a cat.
Filch rolled over. The months of nursing her back to health, the decision not to tell Dumbledore or anyone else, it all weighed on him.
Mrs. Norris jumped on his bed and curled up in his arms. Filch fell asleep smiling. At least she still loved him. One day, when he finished his Kwik Spell course, he would change her back.
R&R