The Last Slytherin Heir

What if there was two prophecy that was made to Salazar Slytherin thousand of years ago?

The first prophecy was the one stating that an Slytherin heir brought to the world by a witch and muggle will became the Dark Lord who will rule the whole Wizarding World.

While the other was a prophecy stating that a hidden family of the Slytherin should be made,a Slytherin family that will bring the Last Slytherin Heir in this world who is obligated to help the Dark Lord.

The Last Slytherin Heir will be the most powerful witch in the Wizarding World, the only one who can kill the Dark Lord.

That's what they knew until of course Potter just have to end Voldemort.

But the thing tough, The Slytherin Heir might be the most powerful witch but where exactly is she?

Her disappearance after the attack to her family made everyone thought that she might be dead.

But little did they know that she was just hiding in the shadows while planning to travel into the past.

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I do not own the Harry Potter Franchise. All belongs to JK Rowling.

This story is also Cursed Child HeadCanon.
*A short summary is included in the Prologue*

I only own Cassy and the Plot.

English is not my first language so sorry for typos and grammar.

Plagiarism is a crime.

Enjoy!

Change of plot *01/31/22*