So for those who might wonder what this au is about it is quite simple.
After Eleven sent Henry (aka vecna) to the upside down she left the facility in order to escape. When she did however she ran into her aunt Becky Ives (who was in Hawkins visiting a friend) without knowing and when Becky took her in and saw what El could do she found out that she was her missing niece and when she introduced her to her mom and told her about her state Eleven helped Becky by telling her about the void and how she can go speak to Terry so once that happened Terry regained her senses and even unlocked her psychic powers from when she was experimented on by Brenner and so with after that touching reunion the three of them moved to back Hawkins where she met Mike and his friends Dustin, Lucas, and Will and they got together and have been besties ever since playing DND.
And Mike, Dustin, Lucas and Will know Jane and her mom have powers for Jane told them the year before the show starts.