What couldhave happened in the Harry Potter universe? To which major flaws do fanfiction authors ascribe?

This is a series of stand-alone chapters each corresponding to an annoying fanfiction trope, or a J.K. Rowling logical fallacy. Humor, sarcasm, and improbabilities abound.

Maeve Donovan could have been saved.

This is a mashup of emotions: my present knowledge juxtaposed with how I felt helpless when I was much younger. Praying was supposed to procure the aid, but failed, leading to my belief that religion is false and deities don't exist. Kissing Venus and Mars...I used to sit out on the roof of the house when I was perhaps ten to fifteen years old and sit, shaking with fear and rage and helplessness. Praying always failed. My words reached the tree branches and fell slowly back to earth with the impotence of shooting stars, and none of their brilliance. Venus and Mars, the planets of love and war, always danced overhead on those summer nights, and I ended up soliloquizing to them...detailing my troubles, ideas, and plans. It felt like joining hands and dancing through the night as my fears and pain evaporated into mercury mist and fell, heavier-than-air to the ground far below my feet.

After Walter Blythe's death, Una Meredith begins to fade away, not unnoticed by the Ingleside folk or her stepmother, Rosemary. Anne takes the girl under her wing and stands between Una and the Piper who has come to take Una's spirit away to join Walter's departed one.