I'm not aware of any official or popular 'Harry Potter' fanfic with such a title. Fanfics usually explore various themes within the 'Harry Potter' universe, but this seems rather strange and not in line with the general tone of the series.
There's a character in some fanfics who is a half - Veela girl in the war. Her Veela charm can be used both as a weapon and a distraction. For example, she can charm Death Eaters into making mistakes during battles. She's memorable because she has this unique heritage that adds an interesting dynamic to the story.
There could be a fanfic where the 'girl in the war' is a descendant of an ancient magical family. In the war, she discovers a long - lost family secret that gives her an edge. For example, she might find a hidden chamber in Hogwarts that contains powerful artifacts that were created by her ancestors. She then uses these artifacts to turn the tide of the war. It would be a really exciting story with elements of mystery and adventure.
One great post - war Harry Potter fanfic is 'The Life and Times of Harry Potter'. It delves into how Harry and his friends are rebuilding the wizarding world. It shows their struggles in dealing with the aftermath of the war, like healing the psychological traumas and restoring Hogwarts. Another interesting one is 'After the Battle'. It focuses on the new relationships that form and the changes in the social structure of the wizarding community post - war.
In this type of fanfic, the Infinity Stones could have a very different effect in the Harry Potter universe. For example, the Time Stone could be used to reverse dark spells or resurrect fallen wizards. However, the Stones' power might also be limited by the magic rules of the wizarding world. The fanfic could delve into how the characters from both universes adapt to the presence of the Stones and how they use or misuse their power.
The Shafiq girl could be a transfer student from another wizarding school. She comes from a family with a long history in the wizarding world but has a different upbringing. This gives her a unique perspective when she enters Hogwarts and meets Harry Potter. She might bring with her new magical techniques or knowledge that catches Harry's attention.
One idea could be that the elf girl is a transfer student to Hogwarts from a different magical realm where elves have their own unique magic. She could befriend Harry Potter and they go on adventures together, exploring the secrets of both wizard and elf magic. For example, they might discover an ancient spell that only works when combined with elf magic.
As a girl, Harry might be more cautious in some situations. In the original story, Harry was often quite bold and impulsive. But now, she might think twice before jumping into dangerous situations. Also, her relationships will shape her differently. She may be more nurturing towards her friends, and this could change the group dynamic. For instance, instead of leading the charge all the time, she could be more of a behind - the - scenes organizer, using her new - found femininity to bring the group together in different ways.
Well, it could be that Voldemort teams up with Thanos somehow. Maybe Voldemort is attracted by the power of the Infinity Stones. He could use the Time Stone to go back and change some key events in the wizarding world to his advantage, like preventing Harry's parents from being protected by the Fidelius Charm.