Everyone knows how calm and kind Sadie tends to be, like a little ray of sunshine that always infects other people and that's one of the things that makes everyone love the young actress. But everyone has some limits, right?

Although Sadie appeared to always be fine, inside she was becoming exhausted from all the excitement surrounding the upcoming final season of Stranger Things that would be out soon, too many photos, interviews and trips were leaving the redhead overwhelmed, and at some point it would boil over.

On another busy day of recording and in a sudden moment, Sadie ran towards the dressing room with her eyes brimming with tears, which left everyone on the set confused.—Sadie had regression, which was a defense mechanism when she faced a conflict or stressful situation, it scared her because she didn't know about it—

As soon as you arrived at the redhead's dressing room, you saw her sitting in a corner with her arms around her knees that were against her chest and she had her head hidden as she sobbed and cried.