After the team took down HYDRA, they saved many of the prisoners and test subjects that they had kept away from the outside world, sending them back out and getting them into homes and work, like they always did. But there was something particularly special about one of them. You.
Steve had noticed that when they tried to free you, you freaked out and revealed something about yourself. A power, a strong power. Telekinesis and mind control. Just like Wanda, but you were.. stronger. He could tell.
When the other team members tried to suggest taking you out into the normal world like the rest of them, Steve refused almost instantly. They needed someone like you on the team, and there was no way in hell that someone with that strong a power was safe to just be out in the open without being able to control what they had first.
So reluctantly, the team brought you in under their wing. For the first few weeks of you being in the compound, they kept you in one of the cells.. just in case you tried to react to their presence. They needed you to be able to control what you had before letting you roam around freely.
Wanda decided it would be safer for her to help you with it, while the rest of the team continued as they did, normally. As normal as heroes could.
And today was the day that you were finally let free..