Hi!
Thank you so much from the bottom of my heart for your message.

I’ve corrected the name of the spell — I thought spell names were the same, so thank you for pointing it out.

As for the plot, for now I can’t make any changes. This is a one-shot, written as a gift for an Italian fan who always comments and gives me a lot of feedback. It’s something I started doing a few months ago and I use it as “training.”

All my one-shots work this way: a fan tells me what they would like to read, and I develop the piece from that request. In this case, they asked for an angst piece set in the graveyard on October 31st, during fifth year.

To answer your question, anyway:
Snape erases the entire memory. Harry will think he never left the castle.
in one of the other two one-shots, Snape finds out. I just don’t remember whether it’s in Legilimens or in Untouchable.

I hope to hear from you again.
I wish you a good read.
See you soon,
Lady