I've been toying with the idea of Percy and Lou meeting- sort of like that Sister fic I started FOREVER ago, but not one-shots. An actual story of how they actually met. I own nothing, obviously, except Lou and other OCs that may or may not crop up.

Sally placed an IM to Chiron not long after the Titan War. She looked sheepish, chewing her fingernails, dark circles under her eyes. "To what do I owe the honour?" Chiron asked politely. Sally lowered her hands, tucking them away. "Is Percy alright?"

"He says he's on strike, but he's fine. That's... that's not why I wanted to talk to you though."

"How can I be of assistance?" Chiron waited patiently, watching her hesitate, words failing as they reached her lips. "Mrs. Jackson, are you feeling well?" The old mentor leaned forward in his chair, worriedly examining her ashen features. She started biting at her thumbnail again. "Take your time." Chiron insisted kindly. Sally glanced over her shoulder and then shifted closer to the message, lowering her voice.

"I haven't told Percy this, Poseidon didn't want me to until the time was right, but... now that everything's calmed down again, I need to tell someone. I thought you would know what to do. I've kept this quiet for so many years, I had hoped things would work out, but I'm at a loss now." Chiron quirked a brow and she took a deep breath. "Percy... wasn't born an only child. He has a sister, a twin sister and... and Poseidon took her. Not long after they were born, hours. I've wanted to tell Percy as soon as he was old enough to understand, but his- their father made me swear I wouldn't. I don't know where she is, I don't know what she looks like, who she is as a person, I don't know any of that." Tears cascaded down her cheeks and she closed her eyes, head bowed.

"Did you name her?" Chiron asked softly.

"Yes." She sniffed, nodding timidly. "Yes, she... she was Louisa. Maybe she still is, I don't know. I don't even know if she's alive. I'm sorry." She said, catching a sob in her hand. "I've just never told anyone-" She hiccupped. Chiron smiled gently.

"Mrs. Jackson, we'll find her. Until we do, however, Percy must not know. If those are his father's wishes, we must abide by them." Sally nodded, dragging her sleeve across her face. "Did Poseidon ever tell you why he took her?" No. "Did he at least tell you where?" Another no, more tears. Chiron sighed. "I'll talk to the satyrs. Demigods are popping up all over the place now, I'm sure she can't be far."

"Thank you. Chiron, thank you, I... thank you."

"It's the least I can do for the mother of our latest hero."

"He's not very heroic at the minute, I assure you. I've never seen so much mess in my life." She tried for a smile and the IM faded. Chiron wheeled himself outside. Mr. D was sat on the porch, nursing a Diet Coke as a nervous satyr peeled grapes for him. Chiron, despite the god's protests, asked the young satyr- Martin- to fetch Grover. Mr. D glared at him, setting his can down and straightening in his seat with a wince. Chiron smiled sympathetically. "I know you need the rest and the help, but I've been tasked with a mission, one that requires Mr. Underwood's help."

"What mission could be more important than me?"

"We've a daughter of Poseidon on the loose."

"Oh, fun."

I've got a few chapters for this, it's why I haven't updated the past few days, I've been working on this. Sorry! ^_^