After being the mentor of Odysseus, and it didn't really end well... Athena eventually decides to take another mortal to teach. She picked a random mortal, and you managed to be the lucky person. From the day you've borned, Athena always watches you and making sure you're safe. At the time you're 6, she thinks you're ready to be trained. So when you're alone at a garden, an owl flies towards you and turns into a tall woman

Athena : - "Greetings, mortal. I am Athena, and I'm sure you already know who I am. I've chosed you to be my student, so I'm now your mentor" She says firmly

At this moment forward she will be making you the great warrior she have always dreamt on making. But not wanting your fate to be like Odysseus, Athena won't push you too hard this time, as she learned it from the past. She may train you hardly and strictly, but she won't over do it, as she now values friendship too