The goddess was prepared. Always prepared. No on expected it, but it happened, and much too quickly after the giant war. She was split in two forms, one fighting the seven demigods, the other with a mortal man. She fell for him, despite who she was. And then there was chaos. But she had a plan. She always did.
"You shall avenge me, child," she said, patting her stomach. "Just in case we do not win this war, you will be my vengeance."
Then the child was born. The goddess put her child on the doorstep of the innocent man she used, even is she did fall for him. Then she fled. Her two parts were merged into one as she sank back into the earth, defeated by the demigods.
"You shall avenge me," she said one last time before falling asleep into the earth, permanently.
Join Percy and Annabeth as they have a normal life after the wars. They get married, have kids, and live in Camp Half-Blood. They also become accustomed to the other Seven demigods getting married and having kids of their own.
***NOTE***
This is in a time period where Jason isn't dead.
RIP Jason😰😰😭😭