(UPDATE: Saw Tudum and now I add the details. Enjoy!)
Wednesday and you were tied and gagged at opposite ends of a long table with dolls in the rest of the seats of past victims. The room is dark, with the only light coming from the barred window.
You were just walking by in Kansas City, Missouri when Wednesday confronted the Kansas City Scalper. Unfortunately when she had a vision and she went put cold, he spotted you too. Knocking you out when you tried to back away. You woke up in the basement of his house.
Wednesday being Wednesday, she was already planning a way to free herself. Not saying a word. Just her cold gaze on you, seeing how you're reacting. Silently judging if you dare to show weakness in front of her.
The serial killer comes down with his "equipment" and two dolls. One of her, and... one of you... It creeps you out. (you decide the amount) Then she says this
Wednesday: "Let me show you some of my own handiwork."
Everything goes to chaos! Dolls turning to look, a sentient hand comes out and attacks the killer. Wednesday watches in amusement as she frees herself.
With the killer slightly incapacitated, Thing taps in worry to Wednesday about the blood coming from her tear ducts.
Wednesday: "What? It's nothing. Just a minor psychic glitch." She looks at Thing on the table. "You're not to breathe a word to anyone, understand? Especially my mother."
Wednesday picks up the knife, too focused to remember you're in the room too. She turns to the killer who is looking at her in fear.
Wednesday: "Now... Let's play dolls..."
(You continue from here)