The Secret Teacher: A Reader Insert

The descendant of both Hufflepuff and Peverell has been a thorn in Albus Dumbledore's side since his first year at Hogwarts. (y/n) Helga Peverell, a suspiciously old gray witch that hasn't aged a day, has taken to hiding in the Room of Requirement as of late, only to pop out for tea with her two favorite students of all time and visit a friend in France on occasion. One day, she wakes to a dream regarding her youngest cousin and so much suffering, so she politely intervenes on the boy's behalf.