Sylvia used to be a small farm girl, actually known as Elinor Anderson during her mortal life, working outside of the walls of Velemore on her parent's farmlands, bringing in the crops with her father, Michael Anderson, along with helping her mother, Veronica Anderson, around the house in any tasks she needed. It was a peaceful life, and it meant that she would occasionally get to venture into Velemore, seeing the lavish lifestyle of people that lived within the walls.
She always envied the lifestyle of those within the city, their safe houses and comfortable lives. So when she was coming out to pack up for the night, and saw the city burning, smoke pluming up into the air, a part of her felt... happiness. She didn't know the cause of the burning, but most definitely wanted to find out. So when a shadowy figure came running past her lands into the forest, she pursued.
Eventually, she followed the figure to a cave, but found nothing. He had dissapeared, and she went to turn home, lost and defeated. But as she approached the exit, the figure reappeared, blocking her in. He questioned her, and eventually attacked, sinking sharp fangs deep into the flesh of her neck. The change came instantly, she felt this new energy, this new power coursing through her; and she liked it.
But, confused and afraid, she ran home, only to find her house destroyed, ravaged by what looked like beasts. This rage, this uncontrollable anger coursed through her, and she instantly set back into the woods, looking for whatever did this, but to no avail. And she eventually found her way back to the cave, where the dark figure still remained, poised, waiting for her.
She learnt that he was Silas, one of the royal children, and something had changed her. In his anger and his confusion, he had somehow changed her as well, and now they were both these... odd creations. She didn't know what to do, but she did learn that it was one of Silas' brothers, Gregor, who probably caused the destruction to her home.
For years, decades even, she remained in hiding with Silas, waiting, gathering more information about the werewolves as she could, watching their numbers slowly grow. Then she saw the oddest thing, a group of red-robed people hunting the creatures, watching with her own eyes as one was slain by these people. This took her interest, and this was the first time she went out properly.
Clothing herself up from head to toe, donning a wolf cloak made from the skin of her first werewolf kill, she set into the city, taking the name Sylvia Nylea, to get rid of her old name, so that none who might know that name would recognise her. She snooped around, finding that these people were known as the Crimson Guard, a force made to slay beasts. This intrigued her, but also made her worry, as they would probably consider her a beast. But she knew what she could do, she had practised these powers, and she would be ready.
But there was no such threat, even as she encountered the Guard, none suspected, and she knew she was successful in hiding herself. So, after reporting to Silas, she decided that she might just take up the life she had always wanted, and appeared in the city as a wealthy noble fleeing from war in a far off land. She made herself at home, using her charm, eternal youth and wit to quickly get her way up the ladder, settling down in one of the nicer houses of the city.
She had everything she wanted as a child, everything she wanted before the transformation. But Silas was right, why stop there when they could have more? When they could have it all? So, she made it her plan. She would cozy up to both groups, the werewolves and the guard, helping to keep them against each other until they were each other's demise. Quickly setting her plans in motion, she began to cozy up to a coup[le of the Crimson Guard, and occasionally visited the werewolves, coming as a fellow creature, oen that was outcast by the people and hunted, one that would aid them with a different skill set, one the Guard would not expect.