He gives her a big hug. Physical contact can be very comforting, and Percy's hugs are always warm and reassuring.
Percy might share a funny story. For example, he could tell her about the time Grover got his hooves stuck in a marshmallow trap. This would make Annabeth laugh and forget her troubles for a while.
Percy would listen to her. He'd let her pour out all her feelings without interruption. Then he'd tell her how strong and amazing she is, and that whatever is making her cry will pass. He might say things like 'You've faced so many challenges before, this is just another one we'll overcome together.'
It could be that she's homesick. Despite all the adventures, sometimes the longing for home can be overwhelming. Percy would comfort her by sharing his own feelings of missing his mother and how they can make new homes with their friends. He might hold her hand and tell her that their friends are like family now.
She might be initially very angry. Annabeth is intelligent and perceptive, so she would likely feel betrayed that Percy thought he could deceive her. For example, if Percy lies about a mission, she could find out the truth later and confront him immediately, demanding an explanation.
Annabeth could also be angry, not at Percy but at the situation or the forces that led to his death. She might vow revenge and start on a journey to find out who or what was responsible for Percy's sacrifice and make them pay. This could lead her into a whole new set of adventures and challenges as she tries to come to terms with her loss.
She might be heartbroken at first. She could try to jog Percy's memory by showing him things that were important to them.
The popularity also comes from the fact that both characters are very well - loved. Percy is brave and kind, and Annabeth is intelligent and strong. Seeing Percy be there for Annabeth gives fans a sense of warmth. For example, in the original books, they've been through so much together, and fanfiction allows fans to explore more of those tender moments of comfort. It gives a chance to delve deeper into their relationship, beyond what was shown in the main series.
It can develop through this moment of closeness. Just the act of her sleeping on him can show a level of trust, which Percy might recognize and it deepens their bond.
She might be shocked at first. Since they are usually comrades or friends, Percy screaming at her is out of the ordinary, so she could just stand there in disbelief for a moment.
Yes, there are quite a few. You can start by looking on fanfic websites like Archive of Our Own. Some fanfics might focus on Percy being there for Annabeth during her tough times in Camp Half - Blood, like when she's stressed about a quest or having problems with other campers.
However, if it's due to relationship issues, like an argument, her sleeplessness might initially create distance. She might be more withdrawn and Percy might not understand why. But as they start to communicate about it, it could lead to a better understanding of each other and a more mature relationship.
Annabeth could show her determination by going out of her way to be in the same places as Percy. She'll be wherever he is, whether it's at his favorite spots or events he attends. And she'll always be there with a kind word or a helpful gesture, constantly reminding him of their connection. Also, she might face any danger or difficulty that comes her way while trying to get close to him again, showing that she's willing to do whatever it takes.