Myth
She never existed; Medusa is a myth.
No. Artemis does not appear in the myth about Medusa.
The location of Medusa's cave is not known.
Arachne, the naming of Athens, or Medusa. Probably Medusa.
The so called Roman Medusa is a later version of the Greek myth written by the poet Ovid in his Metamorphoses. In the original myth, Perseus' killing of Medusa was just an episode in the tales of this hero and was not given in great detail. We are just told that Perseus was sent to kill Medusa, the only mortal gorgon (three monster sisters) who turned people into stone with her eyes. Athena gave him a reflective shield which he used to reflect back Medusa's look and turn her into stone. He beheaded her and gave her head to Athena. Ovid added detail to the myth. Ovid accounts for Medusa's mortality by saying that originally she was a very beautiful woman. The god Poseidon (Triton) raped her in Athena's temple. An angry Athena turned her hair into snakes and made her face so ugly that the sight of it would turn people into stone. Ovid also had Perseus flying over northwest Africa and use Medusa's head to turn the Titan Atlas, who tried to attack him, into stone. The coral of the Red Sea was formed by Medusa's blood when it spilled in the water when Perseus put down her head by the shore while he briefly went to Ethiopia to save princess Andromeda, whom he married.
Myth
My favorite myth is about Medusa. This is a declarative sentence.
She never existed; Medusa is a myth.
There is no myth about Isis and Medusa.
No. Artemis does not appear in the myth about Medusa.
there is not a real Medusa it's just a myth
No, she was a myth.
A myth.
That is what the myth says, but it is only a myth since Medusa does not exist.
Ovid
Myth does not say Medusa's age.