Sinuous was a changeling who defected from Chrysalis’ rule shortly after the failed canterlot invasion. She felt that the power of love, actual love, had greater potential than the vengeful overtaking the self proposed Queen had in mind. Sinuous then donned the look of a unicorn and lived in ponyville, intending to gather love from the inhabitants via good deeds and help enlist them for a coup against the evil queen.
 
However, she was as unwitting as most of the others when Chrysalis came back and replaced all the key figureheads in canterlot, the crystal empire, and even ponyville. She was, however, aware as everyone else that Chrysalis had been deposed with a rebel changeling spearheading a rebellion that revealed all the changelings were being forced to starve due to not being allowed to finish their growth; needing to admit and GIVE love to achieve the final step.
 
Sinuous attempted this, admitting she loved ponyville, she loved the citizens she’d grown to know, and true to the word, she achieved this transformation. Finally free of the perpetual starvation, she thought her life had turned around.
 
But now, Sinuous had a problem; she had been lying to everyone. She never once showcased that she was a changeling, for fear she would be attacked, be shunned, and hated. She lives in a town of friends, but none who know the real her.
 
She now lives in doubt, wondering if there is anyone she can really show her true self to and not be attacked.