I would say "Thanks for the name ideas" but the truth is, not many people helped me here, and I appreciate those who did.
...
Annabeth personally oversaw the construction of the Perceus cabin that summer, as she knew him better than any other camper, only taking breaks for medical examinations that needed to be done near her due date. Otherwise, she rested where she could still supervise the construction. Thanks to her efforts, the cabin was finished and ready by the time Percy arrived to arrange Kai's placement at the camp, as well as the birth of it's second tenant. Some would assume she had it planned all along, but Percy knew better. Despite her calm dimeener, she was rushing the final touches to meet her deadline.
While Annabeth scrambled to put the "proper" finishing touches on the cabin, Percy took their baby girl, Alyssa, to watch Kira's first Capture the Flag game, from a safe distance, of course. While the other campers wore standard armor over their camp clothes, Kira was fitted with a new set of armor, similar enough to her old set, in the camp colors, accented with her parents colors. A new addition to her armor was an arm plate on her left bicep baring an indescribable, by demigod means, symbol that Kiel informed Percy to be her family's coat of arms. Percy scanned the tree line for any sign of Kira, while Alyssa rubbed and gripped his shirt, becoming familiar with the feeling. Percy had little doubt in his mind that the leader of Kira's team would use her as a distraction, or more likely, eyes in the sky. As Percy continued to scan the trees, he remembered Kira telling him about the hunting trip her grandmother took her on before leaving back to her homeland, and changed his tactic to scanning for the one immobile object. It was then that he noticed her, perched ever so still on a beach just beyond a cluster overlooking a popular flag placement, Zeus's fist. There was no doubt, Kira was as adept at hunting as her sister, in her own way. If Artemis hadn't told him about different hunting strategies, he might not have known what Kira was doing. He at the very least understood the concept of baiting ones prey by doing nothing. It was a tactic that required incredible amounts of patience, patience only the most ancient of races had. Luckily, Kira belonged to one of them and was trained, briefly, by one of the most deadly.
Percy covered Alyssa's ears as the battle raged towards Kira's position. He watched in amazement as Kira used the battle to her advantage. She dove out of the tree, swiped the flag, and made her way back to the stream that separated the two teams territories, hopping on the shoulders of the other campers, using her wings to stabilize herself. She was across the line in no time, ending the game. The last time Percy saw a game end this fast was when the campers faced the Hunters of Artemis years ago, a defeat that still rings in the back of his mind.
...
Thalia pushed Nira against the armory wall. It was no secret that she had taken an extended vacation for the past few months, and had been ridiculously grouchy since she returned, but barely anyone knew why she was so moody, except Zoe.
"How much do you know?" Thalia interrogated Nira, " How long have you known? Who have you told?"
"It wasn't that hard to figure out," Nira explained, "but I haven't told anyone. I didn't think I needed to, I mean, the resemblance is- mmph!"
Thalia covered her mouth to stop her from saying anything too risky.
"If you tell anyone," Thalia warned, "neither Lady Artemis nor Percy will be able to protect you from me. Understood?" Nira slowly nodded, "Good."
Thalia released her underling and left the armory. She made her way across the camp, making sure no one followed her, until she arrived at the Zeus Cabin, which she had to herself. She entered the cabin and carefully closed the door behind her. Zoe was inside, rocking a bassinet. Thalia sighed as she looked into the bassinet at the black haired baby girl sleeping within. Behind her closed eyelids was a pair of blue-green eyes.
"At this rate, it won't take long before Percy finds out." Zoe explained.
"As long as he doesn't see her, I'm safe." Thalia retorted.
"And what about Lady Artemis?" Zoe asked, "As soon as Ondine is born, she'll be back in peak form in an instant. You can bet she'll notice that her second in command is being secretive, and then it won't take long for her to discover this one," she gestured to the child, "what then?"
"I'm sure she'll understand. I just don't want him to find out. Not yet."
"I suppose that's understandable. He's been under a lot of stress lately."
...
Any ideas for the name of Thalia's daughter? Perhaps she's named after a Punk Rock band, or at least a member of one.