Disclaimer: I own nothing!
We know Molly's brothers were in the first Order and Moody says that they died as heroes. It stands to reason that they probably told Molly a little about the other members of the Order and, thus, the Potter. We know Molly and Arthur weren't in the first Order (likely because of their growing family) but we know they were sympathetic to the Order's cause.
This was first published on my personal blog.
Nov. 1, 1981
"Hand it over," said Molly Weasley sternly, turning to the small red-headed boys sitting at her kitchen table.
"Hand WHAT over?" asked 3 year old Fred innocently.
"HAND IT OVER NOW," said Molly sternly, between clenched teeth. She jiggled baby Ginny in her arms and held out her hand to her twin sons.
"But Mommy," began George.
"NOW!"
"FINE!" snapped Fred, dumping a load of earthworms into his mother's hand. To Molly's credit, she didn't flinch but simply marched over to the back door and dumped the slimy worms back into her garden. "We were only gonna give them to Ronnie and see if he would..."
"One more stunt like that and I will--"
"Molly!" A sharp voice issued from the fireplace. The five older Weasley sons jumped in their chairs; Baby Ron knocked his porridge bowl on the floor.
"Arthur! What are you doing here?" Molly looked in wide-eyes fear at her husband. He never came home from work early, certainly not at 8:30 in the morning. Never, except for the one time he brought news... "What happened? It's not..."
"No!" He stepped out of the fireplace, sending shoot all over the cluttered kitchen floor. "Molly... Molly... it's... over."
"What?" asked Charlie. "What's over? Dad, what's wrong?"
"The Potter's are dead. The war is over."
Molly gasped; Arthur took Ginny from her arms before she sank into a chair. Percy, Bill, and Charlie looked at each other in confusion while the twins quietly began sneaking to the back door.
"It's over?" she whispered. "The Potter's are dead? You-Know-Who won?"
"No! We won!"
"But the Potter's? Gideon and Fabian told me about them. Dumbledore said they have a son, just Ronnie's age. How can they be dead if we won?"
"I don't know, Molly," said Arthur as he used a Summoning Charm to drag the twins back to their seats. "There're rumors everywhere and no one seems to know anything. The only thing that seems true is that the Potter's are dead and the baby... he lived. He survived."
"But how? Why didn't he kill that poor baby?" There were tears in Molly's eyes as she looked at him.
"He did Molly. He tried. Rumor has it that he tried to kill their son but, well, he's finished and the child isn't. That's all I know." Tears spilled from Molly's eyes; her sons watched her solemnly. Even the twins were still; Baby Ron had stopped smearing porridge into his hair.
Arthur turned suddenly to his sons and clapped his hands. "Hey, boys! The Ministry gave everyone the day off! What do you say we go for a picnic and eat up some of the candy you guys made yesterday!"
"Yeah!" they cheered. Bill dragged Ron from his high chair and, at their father's command, they all trooped upstairs to get dressed.
"What about that poor baby?" sniffed Molly when the room was quiet save for Baby Ginny's coos. "No mother, no father. Do you think Dumbledore would let us raise him?" Arthur smiled indulgently.
"I'm sure the boy has family that will raise him," he said, patting her on the back.
"Oh, Arthur." She smiled weakly up at him and he knew she was thinking of her brothers, her friends. The same questions were going through their minds: the strongest witches and wizards of their day had taken up arms against them. Why, Arthur would have but Molly had begged him not to, to think of their growing brood. Yet, a tiny baby had defeated Voldemort, a tiny baby, no bigger than his youngest son, had killed the most evil wizard of their day. "Is it truly over?"
He kissed her head. "Yes, Molly. It is finished."
