Yet another peggy sue fix it fic by Imouto Kitten

Chapter 3: Ginny's Return

Ginny's awakening in the past was much quieter, but then again, her most 
pressing objective was to unmask Scabbers as the traitor Peter 
Pettigrew. Which was a good thing, because the not even 3-month-old body 
the first girl born into the Weasley Family in generations now found 
herself in could do little more than eat, cry, and poop, and using the 
magic she retained from her previous life to wandlessly and wordlessly 
scourgify her nappies was already stretching what would be passed off as 
accidental magic.

On the plus side, being so young coupled with being a very quiet baby 
thanks to her adult mind and how rowdy Ron and the twins are, none of 
the adults bother with censoring their talk of the war when she's in the 
room. Though she's sure she'll only learn the full story once she and 
Harry meet again, the news of Voldemort's defeat and the resulting 
celebrations reach her young ears by lunch time on November 1st, and she 
can't help letting out a babyish giggle at the news that both of Harry's 
parents survived and that his father is taking full credit for 
Voldemort's downfall.

Over the next few days, Ginny hears of James and Sirius teaming up to 
bring in the traitorous Wormtail, and while the rat still manages to 
escape, the fact James is still alive and Sirius isn't grieving the loss 
of his brother in all but blood allows the two Marauders to set the 
record straight and add Peter's name to the list of wanted Death Eaters.

Ginny is also delighted when she hears that, thanks to warnings from 
James and Sirius, the Marauders and Longbottoms succeed in ambushing the 
Lestranges and Barty Crouch Jr. when they come calling, the quartet of 
Death Eaters apprehended without Frank and Alice suffering as they did, 
meaning that Neville will not only have his parents, but they will 
actually know him this time around, and Neville won't be saddled with 
his father's ill-fitting wand even if he suffers the same self-esteem 
isssues this time around.

And then, it happens, Percy runs into the house holding a rat he found 
in the garden. Recognizing scabbers immediately, Ginny quickly sends a 
trio of silent, wandless stupify, full body bind, and incarcerus at the 
rat before concentrating to cast the animagus reversion charm, Scabbers 
transforming into the wanted man Peter Pettigrew, unconscious, stiff as 
a board, and bound in thick ropes in the middle of the Burrow's sitting 
room, right in front of both Arthur and Molly.

Needless to say, it wasn't long before Wormtail was in a Ministry 
holding cell awaiting trial and every precaution against Animagi in full 
force.