It depends on the definition of harsh, but very arguably very much so. She was reknowned for her harshness in logical and calculated strategies, more than the common definition of "Harsh". Of course, it depends on interpretation of the situation, depending. Athena varied greatly with her strategies.
Arachne and Medusa were two of Athena's many enemies.
Poseidon and Medusa are some of Athena's enemies/rivals.
Poisiden and Medusa were Athena's enemies. And Apolo and Artemis and Zeus were some of Athena's friends.
athena
athena is his enemy
yes
one of Medusa's enemies were Athena.
Medusa cause she had an affair with Poseidon.
athena is medusa's enemy because athena turned medusa into a horrible gorgon when she was caught sleeping with poseidon in her temple
poseidon, medusa and all of posiedons kids
The reason they were enemies is because of the war that Poseidon started.
there was a dispute between poseidon and Athena over the status of presiding over Attics the one who made the most useful gift for the athenians would preside over Attica. Poseidon made a salt water spring and Athena made an olive tree. Thus Athena won the contest this was why Athena was enemies with Poseidon