Canine Lovers - an original Hogwarts fanfiction

****ON HOLD****

Abby Greenfield attends Hogwarts at last, being the last one between 3 older sisters. She isn't a big romanticiser, but after a lot of asking and a tiny crush that she developed on Louis Weasley, she finally falls for him.
Olivia, her older sister, is the complete opposite. She asks her crush out for the ball instead of him asking her.
Amy, the second eldest of the 4, is completely different. She always treated Abby as if she was her worst enemy, but when it comes to putting her and Albus Potter together, it was actually Abby who helps with it.
Abby soon is bitten by the werewolf Fenrir Greyback, who breaks out from Azkaban, at age 16. Louis Weasley, her best friend - later on, her boyfriend, doesn't know it until the first night they sleep together, which is by chance a full-moon night. Abby's anti-transfiguring potion spills all over the place, and she has no choice but to tell him the truth, which is responded to by a very surprising answer from Lou: he is an Animagus. He, just like Sirius Black, could turn into a dog. He then uses this advantage to help Abby through her werewolf phases. She couldn't help but always recognize his eyes. They were what made her fall for him. One time, he got shot by a Sectumsempra spell, and she does everything she can, together with his parents, to try and save his life. will she succeed in her mission?
The story will mainly be told in 7 POVs: each of the 3 sisters, Fred, Albus, Scorpius and Louis.
WARNING: May contain mature content.