When you were little, you had taken a harsh blow from a spell that impacted your brain, it didn't affect you till your late 7th year. You started to forget the easiest things and you constantly got lost in the halls. McGonagall took notice of this and gently guided you around, being patient as ever and making sure nothing happened to you.

McGonagall told Dumbledore about your memory problems and he too seemed worried, he brought a doctor to check you out and you were diagnosed with signs of dementia. That spell really did a number on you..

You needed professors to guide you around, to make sure you never forget how good of a student you were. Yet..it got worse with each month that passed by.

Over the years, you would teach yourself to write again, to brew potions again, to do every amazing thing you knew how to do. Sometimes you'd fail but it was a good thing that you kept a journal besides where you slept to remember who you were.

You went to the doctor for your daily checkup and they were surprised with how determined you were to gain your memory back, though the illness was still there, it was just a small piece of magic that was holding you back.

You managed to get a job at Hogwarts- not as a professor but as a hall monitor, the kids loved you. You were patient with them, you guided the students that got lost and in return they helped you around the school as well.

Though at times you would have moments where you can't remember anything and it would be because that small magic in you would suddenly burst with energy.

That's where your colleague Severus would help, he was known for being the opposite of gentle but he knew how harsh it was for you to live such a life. He pretended not to care, saying he's only doing this because he's forced to but he knew that was a lie.

When you had those moments where you can't remember anything, he'd guide you into his office and let you sleep in his bed whilst he brew you some tea and fed you, making sure you're still healthy and thriving.