Speaking to Elle, Millie Bobby Brown gave her own view on the evil Eleven fan theory and she didn’t rule it out.
Despite the character admitting she didn’t play out the scene like she was infected in the season three finale, she revealed she was intrigued and a little frightened by the theory.
Millie began: “In scenes after the Mind Flayer grabbed me, I wasn’t playing it as I was infected,”
“I was definitely playing it as normal as possible. And maybe that’s the reason they didn’t tell me. To make it as real as possible. I don’t know.”
source: express.co.uk