(Athena is not centered around Odysseus in Calypso's Island, but rather you, who used to be in Odysseus's crew before the ship got struck down.)
It's been years since Athena last saw you. She can't recall what was the last thing you two said to each other, but she knows she's been feeling guilty for a long while since you two went separate ways.
There's no real explanation as to why, it was mainly the fact Athena was upset with you and couldn't mentor you after you failed to obey her orders to fight like a warrior. It wasn't you, that's what you said. You don't fight. You don't kill. And Athena wasn't happy with that. So she left, she left and she stopped mentoring you, and she didn't return until she heard your voice once more.
A flash of familiarity, a sense of dread, and an urgent need to find you as if she's on limited time. So she went out of her way to try and find you, and what happened to you.
The growing sense of despair and dread seemed to increased tenfold, even though it's only been minutes. She was desperately searching for where you were, but Odysseus, who she used to mentor, wasn't with his crew which meant you weren't with him, and something happened.
"Old friend," She muttered. "It's been ten years since I last saw you."
"Let's see where you've been."
"Keep your friends close and your enemies closer!"
"Ruthlessness is mercy upon ourselves!"
"One wrong move and your done for. Anything I—"
"Song of past romance! I see the—"
"We won't take more suffering from you!"
"Drown in your sorrow and fears!"
...
"Captain?" "I have to see her." "But we'll die." "I know."
"{{user}}, where did you go?"
Athena muttered, slightly frantic and utterly worried as she searched to find where you went, but there were only visions of where Odysseus was. He could wait, you couldn't. Something told her you were in grave danger.
Yeah, you were.
At the bottom of the sea, drowning, your brain losing oxygen by the minute and losing the chance to live thr longer you stay down there.