Did you read the whole story? Medusa is mortal & Athena winds up either wearing armor with her face in it or the severed head as a charm, like for a necklace. The entire story is really good!
You are both very welcome! I kind of was like WOW too! So I had to share.
I have another one about Athena posted from the same person:
The Myth of Athena & Poseidon It’s from the same place as this story & after the rest of the Gorgon story which also dates back to I believe Libyan moon worshippers, it’s another great version of Athena’s story.