Disclaimer: I don't own any of the characters from Shadowhunters or The Mortal Instruments series they belong to Cassandra Clare. I do own characters that I create.
Starting from the end of episode 4 of Shadowhunters.
FYI Isabelle doesn't have a parabatai but for the purpose of this she does.
A Love Like No Other
Chapter 1.
Alec had stormed off leaving Isabelle staring after her older brother, she knew that the memory that the demon had stolen from him was one of truth and that was why it had upset him so much. She wasn't entirely sure what she could do. Aside from Jace and her there was only one other person that she trusted enough to talk to about her brother.
"Izzy, what are you doing?" questioned Jace as he watched Isabelle pull out her phone from somewhere within her dress.
"I don't know," Isabelle replied subconsciously dialling a number that she had never called before.
"Izzy?" Jace queried again, looking at her as she jumped at the voice that had answered.
'Hello?' Agatha had been waiting for the call and she wasn't entirely sure why it was something that she had, had a vision of days earlier. 'Isabelle, I know it's you. Put Alec on,'
"How do you know who I am?" Isabelle questioned, she was quite confused as to how someone she didn't know knew her.
'Isabelle, it's Agatha...Aggie,' Agatha replied, pausing when she realised that Isabelle didn't remember her. 'Izzy, if you won't put Alec on what about Magnus Bane?'
"Agatha? That name...it's familiar, but I don't know why," as Isabelle said Agatha's name Magnus had walked back into the room, Alec was still standing looking out the window.
"Agatha, let me talk to her," Magnus held out his hand for Isabelle to hand him her phone. "Young shadowhunter it's been a while,"
'Magnus, are they okay?' Agatha asked, she had to know this. 'Magnus tell me before I portal there please,'
Magnus and Agatha talked quietly for a few minutes before Magnus' lair shook with someone using a portal into his bedroom. Agatha walked freely from Magnus' room and straight over to the warlock smiling at him as she gave him a hug.
"Big brother," as she spoke she noticed that Isabelle, Jace, Alec and Clary were staring at her. "Magnus shall we?" she questioned, as she pulled her jacket off and tossed it onto the couch – thus revealing runes that were scattered across her body. "And don't pull that crap on me I know where you put the memories of me,"
"The memory demon is dead Agatha," Magnus said watching as Agatha's fingers started to spark.
"There's more than one greater demon that is a memory one, and you know that," Agatha sighed, Magnus' cat eyes flashed yellow and his own fingers started to spark. "Besides we don't need a demon, just a spell. You may be old and powerful but I know things too,"
Agatha fed the spell to Magnus and together they said the spell with Agatha bringing forward a white candle and two red ones as she spoke ensuring that Alec was somewhat in the vicinity of the room. Magnus wasn't sure that the spell that they were casting would bring Clary's memory as well. Agatha glanced at Isabelle and smiled when she saw the look of remembrance on the young girls face.
"Aggie!" Isabelle exclaimed once the spell had taken full effect. "Talk to Alec? Please?" Isabelle pleaded with her all the while giving her a hug.
"One step at a time kiddo, let me talk to Jace first," Agatha smiled, and walked over to Jace who was still half lying on the floor. "Hey, I know your memories are probably of me leaving and that you more than likely hate me for it but you have to know that I did that to protect you,"
"Get away from me," Jace hissed at her as Agatha grabbed his face and forced him to look at her.
"Jace, look at me. You know why I'm back," she told him before letting go and getting up to go find where Alec had walked off to. "Alec, it's okay you know,"
"Go away Aggie," as Alec said her name he spun around and saw that it really was her. "Wait, is it really you?" he questioned, poking her to be safe.
"Yes, it's really me," Agatha laughed reaching up and pushing his hair from his face. "Want to tell me about it?"
"You can't do anything," Alec told her gruffly stepping away from her.
"Alec, close your eyes," Agatha told him, holding out her and and grabbing his as she spoke. "The greater demon may have taken that memory but you have so many more of him that you'll never lose," Alec did as he was told and closed his eyes as a wave of memories flooded his brain most of them causing him to smile. "See I told you that the most precious of memories can't be taken,"
Alec rolled his eyes at Agatha as Isabelle and Clary helped Jace into the room. Magnus standing back and watching them, wondering how long it would take for them to question how Agatha was both a Shadowhunter and a warlock. The only other person that was a little bit like that was Tessa Gray.
"Clary, I told you that Alec was my parabatai, well Agatha is Isabelle's," Jace told her, though he wasn't happy that she had, had their memories of her hidden he was happy that she was back.
"You can call me Aggie, everyone else does," Agatha smiled at Clary as she spoke, watching as a playful grin appeared on Isabelle's face. "Izzy, I know that look and no, not until we go back to the institute I need to talk with mother,"
"You're no fun," Isabelle stuck her tongue out at Agatha as Alec wrapped his arms around Agatha having moved closer to her. Alec never showed affection to anyone and that was something that had always puzzled Isabelle. "Am I missing something?"
"Nothing Isabelle," Alec glared at her still hugging Agatha. "She's only my best-friend before Jace," Agatha laughed glancing up at Alec and smiling at him.
"I missed the three of you more than you'll ever know," Agatha told them, looking at Clary she said "One day you will understand just how much the three of them can mean to a person, you'll see,"
"Aggie, promise you're not going anywhere soon?" Isabelle questioned, hoping that the older girl would stick around – things weren't the same without her parabatai.
"We'll see. Sorry for taking up your valuable lair Magnus. But thank you for helping them, well trying to help them. I'll contact you later?" Agatha didn't wait for Magnus to respond to her as she opened a portal as close as she could get to the Institute without being with in the walls. "Izzy, take Clary through the portal, you should end up just outside the Institute. Alec you and Jace go next, I'll follow" and with that Isabelle took Clary through the portal, followed closely by Alec and Jace.
"Be careful my dear Agatha," Magnus said as Agatha disappeared through the portal.
Fun fact: Agatha is the niece of Luke Garroway/Lucian Graymark. Her mother is his older sister Amatis, and her father is both Stephen Herondale and Asmodeus – his DNA mixed with Amatis & Stephen's to produce Agatha, making Agatha both Jace and Magnus' half sister.
Stay tuned for more Shadowhunter/Mortal Instruments stories. Check out "Welcome To The Family" in my stories if you need a fix on the Mortal Instruments.
