Sketch: Antian Is Mine!

Ah, the strange love-triangle, in which the two brothers (Noatak and Tarrlok) don't really hate each other, but, fate pitted them against each other...and, even more so, when the girl that they both loved stepped back into their lives. And, that's when the fun(?) really began...

Antian went to Republic City, and was happy to find Korra, albeit in the company of Tarrlok, whom she did not immediately recognize.
"Korra!" Antian hurried to hug to teenager.
"Antian!" Korra was happy to see the woman that had helped to train her in her Waterbending, and quickly returned the hug.
Meanwhile, Antian's Raccoon-Fox, Yun, sniffed at Naga, and then began to wag her tail. Naga, recognizing her old friend, also wagged her tail.
"...Antian?" Tarrlok repeated, taking a step forwards.
"Yes?" Antian turned to him, her braids swinging and the sunlight glinting off of her betrothal necklace. Then: "AURGH!!" She jumped back, pointing an almost accusing finger at Tarrlok, as her face blushed red at his sudden smirk of recognition.
"It is you!" Tarrlok confirmed, nodding, as Korra began to look confused by the antics of the two adults.
"T-Tarrlok?!" Antian stammered, her face a mixture between outraged and disbelief. "What the...why are you here?!"
"Hello to you too, my dear." He replied, raising an eyebrow, and she blushed even further.
"My dear?" Korra repeated, crossing her arms and grinning, slightly. "Wait...were or are you two, an...item?"
"NO!" Antian cried, at the same time as Tarrlok nodded, and said: "Yes."
"Tarrlok!" Antian marched up to him, looking up at him. his smirk infuriated her. "That-that was a long time ago!" She reminded him, but, her fingers still touched the necklace around her neck, that Tarrlok had helped to make. "I didn't come here just to see you!"
"Are you sure?" He asked her, knowingly.
"...No..." She admitted, her eyes suddenly downcast. "I just...needed to see you, is all..."

After multiple evasions of the Equalists, whom had been actively hunting her down after multiple public speeches openly chastising the Equalists' activities, Antian was about to get a visit from somebody. Amon, formerly known as Noatak, found it easy to find the woman and, without so much as introduction, immediately attacked her.
Antian, naturally, defended herself using her Waterbending, but quickly found that this Amon was able to extort all of her weak points, namely the blindness in her left eye.
As she was subdued from behind, and began to fear that she would lose her Bending as Amon's hand that was not around her throat went for the back of her head, she called for Yun.
Yun bounded onto the scene and growled, hackles raised but, recognizing Noatak's scent, sat down, and whined, in confusion.
"Yun?" Antian asked, and Amon, recognizing the signs and clear indications that this was Antian, froze. "What's wrong?"
"So, we meet again...Antian..." Amon/Noatak whispered in her ear.
"Do I...know you?" Antian struggled to get free, her necklace once again brushing against her captor's fingers. As he suddenly held onto it (her necklace) she exclaimed: "Let go of that! It was made for me by..."
"By me." Amon replied, as Antian's eyes widened.
"Wh-what did you say?" Antian hissed. "How-how dare you! You are not..."
"Noatak?" He spoke the name as if it sounded unfamiliar to him after all of this time (which, it was) but, still, Antian froze.
"Noatak..." She repeated, gasping slightly. "Amon...you're really...my...Noatak?"
"Yes." He replied, before knocking her out...

Here's a picture of Antian as a teenager, and her biography, explaining her backstory...
dark-anmut.deviantart.com/art/…