yes.
Cast In The Name Of God…Ye Not Guilty

I think she is who she's always been. Other characters (Melissa, Adam) have told her she just wants to burn everything down and watch it explode, they are right. She's always been this person and the wilderness brought it out of her. She tried to live normally when she got out but she can't, or really she doesn't want to. When Natalie was dying, her younger self turned to her in her vision and said "This is exactly where we belong, we've been here for years", its the same for Shauna and all of them, they've been there for years. They were taken out of the wilderness, but the wilderness and what they did in it, couldn't be taken out of them.
Cast In The Name Of God…Ye Not Guilty

I really don't think she ever had it.
Cast In The Name Of God…Ye Not Guilty

“Eat it”
She’s nuts
Stop.

It seems as though young Shauna has indeed also lost it as well. I mean, telling the others that they can't leave the camp and trek to the rescue point of their own free will? What an arrogant asshole.

Do you think she lost it In the 90s timeline?
Stop.

I think she's officially completely lost it. Never thought the show would take her character that far. Melanie Lynskey must be having a blast.

She’s ****ing nuts
“We wanna go”
“No you’re not”
Stop.

I mean
she bit a woman's neck off and told her to eat it

I've only just finished this episode and I feel SICK
🤍