No. I don't think Athena is THAT vain. Though she has many kids, she seems especially proud of Annabeth, so I don't think that she will hurt Percy for being with her, because Annabeth likes Percy. :D So, she might warn Percy a few times ("Stay away from my daughter." "I'm watching you, son of Poseidon.") she wouldn't hurt him, for the sake of her daughter. :D

My perdiction is that she will probly want to harm Percy but Annabeth will pervent her from doing so.That or hopefully she loves her daughter enough to accsept her desission,fellings, and relationship.Or maybe Percy comes to prove himself worthy of Athena and is allowed to date Annabeth "but her cerfew is at 10:00. If she even goes past a second of that time I will have you turned into a spider!!!" No disrespect intented.

She will probably won't punish percy cuz she know that a chosen one like percy is good for her image and her histories image.plus it makes annabeth happy and she hasn't been happy for a looong while so it makes her happy=]

come on, she's Athena! I am one of the top fans of her! She can't punish Percy!

No. She wouldn't punish Percy because she is just protective of her kids and Gods are not supposed to interfere in their kids live or other demigods...