For a brief moment, the Dazzlings nearly had what they wanted: the adoration of a stadium's worth of mind-controlled teenagers, enough magic to spread their wings for the first time in moons nigh-uncountable, and their only competition literally trapped under their boot heels. All they had to do was finish their song, bring the Rainbooms under their control, and spread their voices throughout the world. After that, Humanity would have adored them. Ponies would have been next in line. Their feast would have been exquisite! But, in their long quest for power and adoration, they had made a mistake.
Now, magic-less and reduced to the status of teenagers, Adagio Dazzle couldn't imagine the price of their mistake being any more unbearable as she and her sisters struggled to trek through the cold thick snow on the ground, a product of the terrible blizzard that showered even more of the stuff onto them and the earth around them without remorse. They had the good sense to wear thick Winter clothing, but not even that could stave off the coughing and headaches that frustrated them to no end, not to mention the freezing cold. Sonata sniffed and whimpered while shielding her eyes from the storm with one hand and holding onto herself for more warmth with the other. Aria was hardly better off as she held Sonata by the shoulders to keep her from falling. When those two were not arguing over something for longer than a minute, Adagio thought to herself, then the situation was either that important or that dire. In this case, it was a bit of both. They had to get home to shelter themselves from the storm and quickly at that! Adagio looked over her shoulder to check on her sisters, they were still keeping pace with her. With a quick nod, she turned back to face the path forward. That is, she would, if she could see beyond a few feet. The snowfall was intense enough to produce a fog that was too thick for the girls to see anything that looked remotely like a house from a distance, so they had to press forward if they wanted to have any chance of getting their bearings straight. The headaches and coughing did them no favors in regards to putting their senses to use either, but there was also the increasing fatigue to consider.
"If we don't find warm shelter soon...", Adagio thought out of frustration and a looming panic. Both of these feelings, however, were crushed by her stubborn pride;
"No!", she exclaimed to herself and her sisters as they trudged along, her body refusing to turn around to face them;
"We are Sirens! We've faced storms worse than this in two worlds! We won't be brought low by some mad Human weather and-!"
Her speech got rudely interrupted by a fresh bout of coughing that prompted her to clutch her chest for dear life. It lasted for a few seconds before fading, which allowed her to finish with a bit of a rasp in her voice;
"Whatever curse this pathetic world has placed on us!"
Aria and Sonata, emboldened by her words, ran up to Adagio's sides to hold her steady as they walked together. She looked over at each them in surprise. Sonata gave her one of her giant, overly sweet smiles, while Aria expressed a frustrated glare with the smallest hint of a smirk. With a venomous toothy grin, Adagio gave the storm before her a glare filled with ill intent, as if she were daring it to do its worst. Defiance filling their eyes, the girls continued to stomp through the snow, even as their fatigue grew stronger by the second.
Eventually, the storm gave them a harsh reminder of the Human body's limits in the form of a terribly exhausted Sonata. With a sneeze from her stuffed nose and a whimper that almost sounded like a cry, she slipped off of Adagio's shoulder and face-planted the snow. The other two girls turned towards her in an instant, with Aria kneeling down to turn her body over, so that she could breathe.
For the first time in many an age, Aria showed genuine concern for her younger sister's health and well-being, her perpetual grumpiness dropped in the face of...
"No! This is not happening to her, to us!", she internally declared in protest against what she was seeing before her while cursing the weather that kept raging around them;
"Sirens do not die!"
Sonata was still conscious, but she could barely keep her eyes open. Her breath was short, heavy, and terribly audible as her sisters looked on. Adagio was about ready to give her her Winter hat to ward away the cold as she told them with a small smile and a voice filled with regret;
"I'm sorry... for annoying you two so much..."
Her eyes closed with a flutter before her head tilted to the side, fainting in a way that made it look like she had fallen asleep. Adagio would not have any of this. She picked up her composure as well as the unconscious Sonata and carried her on her shoulders with more strength than she thought she had. With Aria staying close to keep her taco-loving sister from slipping, the two pressed on.
After what felt like an eternity of walking through the world's thickest blanket of frozen water, Adagio started to hear the pace of Aria's steps slow down to a crawl before a sudden rush of moving snow took hold of her attention. She turned her head to check on her, only to find that she could barely keep herself up on her right knee. Even with a fainted Sonata on her shoulders, she could still muster the strength to rush over to Aria, who was coughing even more profusely than before. She looked up at her older sister with the most indignant glare she could possibly come up with before slowly announcing with raspy anger in her voice;
"This... has to be... the most annoying... thing... ever..."
With that, she had unwillingly bid consciousness adieu while falling into the snow via her left side, fatigue and illness claiming her as well.
Adagio's composure nearly fell to pieces, but she kept it together. She would not fall apart here, not while her sisters needed her! Unfortunately, before she could formulate a plan of action, exhaustion had overpowered her physical strength. She fell to her knees while Sonata's body slid down her back. With a fury older than the Human nation she lived in, she internally cursed everyone that had earned her ire, her slowly fading consciousness doing nothing to ease her rage.
She cursed Starswirl, the one who jailed them.
She cursed the Rainbooms, the ones who bested them.
She cursed the Ponies of Equestria and the teenagers of CHS, the ones who would have been their servants.
She cursed herself, the leader of the trio that was now facing a cold end.
Adagio laid herself on her right side on a spot that placed her between Sonata and Aria. The snow was freezing cold, but it didn't matter. Even now, at the end, she would not abandon her sisters. Her last thoughts while she was still awake were of them as she confessed to herself while trying vainly to keep her eyes open;
"No, Sonata... I'm sorry... for-"
Everything went black before she could finish.