Keep wreaking havoc around the Henbane to draw Faith's attention once more.
As before, Faith will appear to you in hallucinations. Unless you're in the middle of something else, go ahead and speak to her to continue this quest. If you don't, your other hallucinations will start to pile up to unmanageable levels. Besides, this isn't a difficult or time-consuming quest.
Faith will draw you again into her fantasy realm. When have control, walk forward to join the group, but do note the jackalopes. They're fun.
A cutscene plays, in which the Father makes some observations on the state of society.
The hallucination ends with the Hope County Jail crew stabbing you with adrenaline, and bringing you back to the real.