Haven't proofread! This is supposed to be what happened during the Lightning Thief quest, and I left most parts out and just wrote the ones which are slightly different due to Jada's presence, and if you haven't read the book you might not exactly get it bc there are references in their speech/conversations that are in the book but not in this chapter

Jada swore violently as she almost materialized into a dirty lake. Thankfully, she caught herself on a bridge's edge before falling into the scummy water. Climbing over the railing, she saw masses of reporters and people crowding around, and she knew, already, that it must've been something related to her friends.

She rushed out, slightly panicking, all the while telling herself to stay calm, stay calm, stay calm… She was almost about to scream when she caught the familiar sight of that messy, dark hair.

"Percy!" she called.

Percy spun around and met the eyes of the very Jada Potter, and almost cried in relief at seeing someone- anyone- he knew.

"What- How- Why are you here?" He asked, stunned. "No, no don't answer that. I just blew up St. Louis Arch, what in the name of Olympus am I going to do?"

"Let's go, Percy, c'mon, quickly," Jada tried to walk but all that shadow-travelling had her feeling drowsy and she almost collapsed in Percy's arms.

Percy's eyes widened. "What happened? Are you okay?"

Jada nodded slowly. "I- I-"

She couldn't collapse now! Not when her friends needed her. "I'm fine," she managed.

"It's alright, I got you," Percy said before slinging her arm around his neck, off to look for Grover and Annabeth.

"Percy! Percy! Jada?" Annabeth's incredulous voice shook her awake by a bit. Percy slung her onto his back so he was piggy-backing her.

"She appeared out of nowhere, and I don't know what happened to her!"

"It's alright," Grover and Annabeth said quickly. "We just need to leave quickly."

The hotel was amazing! New clothes, new sheets, fresh food… Percy and Jada headed down to the swimming pool where Percy started splashing water and experimenting with what he could do while Jada lay stomach-down on a chair, sun tanning. Annabeth and Grover reclined on the sofas in the rooms and watched the National Geographic channel.

They soon went to the game arcade to hang around. Half an hour had gone by, and Jada was really, really enjoying herself. Was this what it was like to be a normal person, and not a demigod?

Wait.

A demigod.

What was she doing here? She was a demigod, she wasn't supposed to be relaxing a 5-star hotel. Why was she here in the first place? Then she remembered

Hades. Thalia. Avenging her sister… this was the whole reason she came. She gasped as realization hit her, and ran to look for Annabeth.

Thank the gods Percy had come to his senses too. She ran into him and started rambling, "Percy, we have to get out of this place-"

"I know, it's messing with my mind as well-"

"Oh thank goodness you've realized!" Jada threw her arms around Percy and felt him shaking as well.

"We need to find the others. NOW," Percy whispered.

Jada nodded, and she and Percy went to look for their friends.

Fear crept into Jada like nothing ever had before. The sick lurching in her gut shook her and nearly brought a scream to her lips as she stood at the edge of the pit. They had entered the Underworld for less than 10 minutes and this was happening.

"Grover!" Percy and Annabeth called at the same time. They rushed forward, trying to catch hold of them as Jada watched in sick fear, unable to move.

This was the pit which had been the subject of her nightmares for the past weeks. She stood in horror, trying to overcome the sickly emotion trickled down her organs. The person at the bottom of that pit… what Percy had told them on the taxi…

No. No way this could be true.

"Run!" she yelled at her friends as they dragged Grover off that pit.

Annabeth looked Grover over, checking that he was alright. Percy hurried over and took a look at Jada's white face.

"You okay?"

Jada opened her mouth but no words came out. Her heart was still pumping and they could still hear that low, slicing voice in the distance.

"Hey," Percy gently put his hand on her elbow. "It's alright."

Annabeth pretended not to see the physical contact between the two. Yes, ever since the ride on the truck, she had started to feel different about Percy- in a good way- but her emotions were scaring her, and she really didn't like the feeling in her gut when looking at Percy's fingers on Jada's elbow.

It's a platonic, friendly touch! She yelled inside her head. It's nothing he does that to everyone!

Annabeth loved Jada, dearly, and nothing would ever change that, but if Percy didn't want Annabeth because he wanted Jada instead… it would be just like Luke; Annabeth had a crush on Luke but Luke liked Jada- a lot.

She saw the way Luke looked at her and she knew something had happened between them last summer, but after Percy, she didn't care anymore. Luke could go with whoever he wanted, she realized she never loved him in that way, in the end, he really was just a brother to her.

But Percy… he was different. The thought of Percy not loving her… or even liking her back was a painful notion. She closed her eyes and sighed. Now was not the time to be dwelling on romance, she was on a quest!

"C'mon guys, let's continue walking," she whispered.

They continued down the road.

"Annabeth," Jada whispered to her. "You- I- that thing in the pit-"

"Shh," Annabeth whispered back. "Now's really not a good time, but yes, I do think…"

Jada's face turned whiter and she squeezed her eyes shut. She quickly glanced behind her to make sure Grover and Percy weren't listening. They were staring in awe at their surroundings, so Jada continued.

"I can't believe we were so close to that. But Annabeth, listen, I don't think he was just mindlessly muttering. I think he- I think he's actually-"

"Actually trying to rise," Annabeth supplied.

Jada nodded. "Don't you think all these past events, don't they sort of hint at you… if you put them together, it seems- it actually seems possible! And I've been having these dreams… he was talking to me…"

"What?!" Annabeth whispered shouted, shocked. "Kron-"

"Don't say it here!"

"He was talking to you in your dreams and you just never bothered to tell anyone?!"

Jada shook her head, sighing. "I'm sorry. I didn't- I wasn't sure- Ugh. There was something so weird about it… like it was preventing me from telling anyone. And remember in the taxi, Percy said he heard another voice that was familiar? That means there's someone working for him, he's hired someone to work for him! And that someone is a person Percy knows! What if what I'm saying is all true, Annabeth?"

Annabeth squeezed her eyes shut. "I- I don't know, Jada. I really don't know," her voice was full of frustration and fear, which did not cope well with Jada's insides either. She was about to continue when they realized they were standing in front of a set of black doors.

Looking up at it, Jada's thoughts were erased of those fears and voices and dreams, and Thalia's touch flooded through her blood. She was standing in front of the room in which the person who killed her sister- the person she wanted to utterly annihilate, the person who was her mother's grandfather…

Taking a deep breath, she said in greek, "Let us in."

The doors opened to reveal him laughing a sinister, hard, deep laugh, his black beading eyes alight with flames as his gaze bored straight into Jada's.

"Oh, demigod, walking into my palace and immediately ordering me around? You really are your father's daughter."

Jada was about to snarl an "I am not" at him, but Annabeth stepped on her in warning.

The god's eyes drifted to Percy and a look of interest and curiosity lit up his irises. Percy sucked his breath in. Hades began examining him from head to toe and Jada saw his lip curl slightly.

Jada could see why. Although just realizing that he was a demigod less than two weeks ago, Percy had already grown fast. His posture was straight, his height had increased quite a bit, and his chest and arm muscles had nearly doubled in size with all the intensive training he had. His talent at sword fighting, at pretty much anything to do with attacking and defending was like nothing she had ever seen before. He was no longer a bony, little kid who looked like he couldn't fend off a single bully in the world. He was now a demigod fighter who had the courage to enter the underworld. Standing there, despite being 12 and tiny in comparison to Hades, Percy looked like someone who could fight for what he wanted, and Jada felt safe knowing that Hades knew Percy would be an actual enemy.

The thought made her confident. "Let us cut to the chase here. You know why we're here. You give us what we want, and we- they stop bothering you."

"They?" Hades raised an eyebrow and leaned forwards to look at her. "Why, is this about that sister of yours? The other broken pact?"

Jada's breathing rose and her glare hardened into Hades'. Percy's gaze dropped as he remembered what Annabeth had told him in the truck, about how it had been her, Luke, Jada and Thalia who were the ones who went up the hill.

Hades laughed. "You, I know why you're here. But the other three? They want nothing from me. In fact, they already have something that belongs to me. Specifically, that one," Hades looked to Percy. "Am I right?"

Percy looked confused. "What? Um, Uncle, I'm not sure what you're-"

"That's enough lies for now. You have the bolt, and my helm of darkness, and I want my property back!"

"You're Helm of Darkness is missing?" Annabeth asked incredulously.

"Do not play innocent with me, daughter of Athena! Return my property!"

"We don't have it! They don't have it!" Jada yelled.

"Do not speak to me that way, you ignorant, arrogant girl! You will return my property, or the war I have prepared will be waged under my will. You have my property, and that son of Poseidon is carrying your father's property too," he finished, looking at Jada.

"What?"

"Take it out of your backpack, Percy Jackson. Show her that you are the thief of that bolt, and my Helm."

Percy shook his head in disbelief as he took out that cylinder. Hades laughed. "You demigods. Your pride makes you foolish. You believed you could fool me? You think you're so clever, don't you, coming here to feed me with lies. Give me the bolt."

"It's not yours," Jada retorted immediately.

"What? I swear it wasn't in here, the backpack belongs to Aries, he gave it to me back in…"

"Hand it over, demigod, and I will give you what you truly came here for," Hades snarled. His palm opened and a golden ball of fire erupted in front of their eyes. An image of Percy's mother, right before she got squeezed into gold dust by that monster was right inside that ball of flames.

"Give me the bolt, and you can have her back."

Jada was frantically trying to think up of something to do.

"Let her go! Let all of us go, you stupid, dim-witted, arrogant, blind-"

Hades snapped his fingers and a 6 foot high black flame erupted from under Jada's feet and consumed her. It was not hot, but it was painful, and by painful, Jada meant scorching, searing pain spread through her body like she was being stabbed and teared, limb-by-limb, on the spot, preventing her breathing but forcing a scream out of her lips.

When the pain had left and Jada's vision had returned, she saw that Percy had pulled out his pen-sword from his pocket, and Annabeth's and Grover's hands had both drifted towards their respective weapons.

Kneeling on the grown, Jada panted and glared up at Hades through her eyelashes. Her hands squeezed her elbows and she closed her eyes as she felt Annabeth's arms wrap around her shoulder.

"Hopefully that teaches you to keep your mouth shut from insolence towards beings such as me," Hades smirked. "You'll thank me later, your father, Zeus is nowhere near as kind when demigods speak to him in that way."

"Give us Percy's mother," Jada whispered as she rose to her feet. "Give us his mother before-"

"Jada!" Annabeth hissed.

Jada closed her eyes and took a deep breath. The stinging pain was slowly fading away from her limbs and neck, and everywhere else as well.

Jada saw Percy's eyes light up as he reached into his pocket, but Hades was faster than them.

"Ah, the pearls," he laughed. "Bring them forth, Percy Jackson."

Percy's hands brought the pearls out from within his pocket.

"Only three pearls, and how many do we have here? Let's see-"

"Five!" Jada retorted. "We get it! We know how to count you br-"

"Careful," Hades warned before glaring at her. "Yes, you have five people, and three pearls. Two will stay. Your mother, Percy Jackson? Your best friend, the satyr? Or will you leave the daughter of Athena who accompanied you this whole way? Or the insolent one, this daughter of Zeus? You need to pick two to sacrifice to me."

"I'm not leaving anyone behind," Percy said stubbornly.

Jada put her hand on Percy's arm comfortingly. "Percy, let me stay. I want to stay, I need to stay. Let me do this for Thalia. Let me do this. And I will bring your mother back for you. I promise. You need to go find Aries. You need to find Zeus, and complete your quest."

"Choose, son of Poseidon!"

Percy handed a pearl each to Grover and Annabeth. He looked painfully at Jada, then at his mother. Jada smiled. "I won't fail you, Percy," she promised. "I swear I won't fail you."

Percy desperately didn't want Jada to stay in this place with that person who had just sprung black fire on her- even if just for 4 seconds- but he knew he needed to let Jada do this. Thalia was her blood sister. It wasn't just because of those years they had spent together, with Annabeth. Jada and Thalia were supposed to be there for each other, and Hades took that away from them.

"I understand," Percy whispered. They shared a quick embrace. Jada then hugged Annabeth and Grover, just like she did before they left for the quest.

"I swear I'll see you again. I will," she whispered.

"Wait, no-" Hades started.

"NOW!" Percy yelled.

"You will not-" Hades stuttered.

They smashed the pearls at their feet, and for one scary moment, nothing happened.

"The Poseidon offspring will not leave! He-"

Then bubbles encased the three of them and they drifted up into the ceiling, and then through it.

Jada was now alone. With the person who had killed her sister.

She turned around to see that Hades had stood from his throne and shrunk to human size.

Jada's hand drifted towards her waist, ready to procure her dagger if necessary.

Hades raised his eyebrows. "Plan to fight me, girl? You are as arrogant as your father."

"And you're as stupid and as heartless as him, I'm sure," Jada shot back.

"Watch where you tread, and proceed carefully," Hades whispered coldly. "You want to end up just like your sister? Or worse, seeing as your father isn't here to turn you into- what was it again? A tree?"

Jada growled at the back of her throat.

"Where was the point in staying with me, Jada Potter? What did you hope to get for your sister, were you expecting to avenge her? By fighting me?"

Jada was lost. Why was she here? "Why did you kill her?" She asked. Her voice was thick as she felt tears stinging at the back of her eyes.

"Your father would have done the same," Hades drawled.

"Thalia isn't her father! Just because you were mad at Zeus, doesn't mean you had the right to take it out on his daughter! I'm asking you right now, why you did that to Thalia, not my father." She paused. "Or did you not care? Was she just collateral damage in the process of you gaining your revenge? You gods say we're arrogant, but you treat us as if we're nothing! Get over yourselves, being immortal doesn't provide morality to what you're-"

Hades snarled. "You want to talk about morality? Explain how it was moral for your father to-"

"I have nothing to do with the choices my father made! Neither did Thalia, so she didn't deserve to pay for a mistake Zeus made!"

"She was the result of his mistake."

"And I'm not?" Jada asked.

"You are, as well."

"Then kill me," Jada challenged. "Do it."

"You are trying to drive this conversation to your mother," Hades retorted. "Do not push your luck."

Jada was shocked that Hades even mentioned her mother. Now, she really didn't know what to say back to Hades. Instead, she moved on to something else.

"Make a deal with me, Hades. I'll give you what you want if you give me Percy's mother. I know she isn't dead."

"I want my helm back."

"I don't have it! I swear on the Styx that it's not with me, and Percy definitely did not steal it. I can vouch for that."

Hades said nothing. He turned and started pacing the throne room. Jada sighed and leaned against the wall. Slowly, she slid down and sat with her knees to her chest.

"You can leave now," Hades sighed.

"I'm not leaving without Percy's mother."

Hades said nothing. He rose to full height and sat down on his throne.

There was silence for a long time.

"Say you're sorry," Jada whispered. A tear slid down her cheek. "That's what I want. Say you're sorry that you killed my sister. Say you're sorry about the sorrow you caused me and my friends. Tell me you're sorry…" more tears were rolling down her cheek as Jada's voice broke. She squeezed her eyes shut.

Hades said nothing for a while.

"You're my child too, Jada," Hades said dully.

Jada looked up, surprised. His voice was not as hard and as sharp as it was just now. It had softened by fractions, and he had said Jada's proper name.

"Your mother was my granddaughter," he continued.

"Oh," was all Jada said.

There was silence again.

Later, when Alecto had returned with the Helm, Hades had let Percy's mother go. Before leaving, Jada took one last hesitating look at the being who had obliterated her sister's life. He was her mother's grandfather…

"The son of Poseidon's mother has been delivered back to her apartment."

Jada nodded. Then, without saying anything, Jada turned and disappeared.

Will try to update again in the near future!