Shauna needs to chill.

I think her coming to the conclusion that Alex sent her the tape is another "Adam is definitely blackmailing us" scenario. She's so sure she knows what's happening and then murders the wrong person.

I wouldn't be surprised if Alex didn't even know she had a teen mom who went missing in the woods 25 years ago. I think she's a red herring. The last survivor orchestrated this whole thing to get Shauna alone (probably Melissa.)

And I wouldn't be surprised if Walter is the one killing/trying to kill surviving YJ. He wants Misty to leave them because they're bad friends so he's picking them off one by one. The tape and the brakes are separate things.

(And no one locked Shauna in the freezer. Sometimes those doors get stuck [personal experience; it wouldn't open until I kicked in the doorknob and Shauna just jiggles it a little.])

Also I might have missed important details because I went to the bathroom and didn't hit pause or something so if I missed something that kills this theory, don't let me be delusional.

Please add more to this theory 🙏 🫂