The Question and Answer section for The Crucible is a great resource to ask questions, find answers, and discuss the novel.
Danforth tells Proctor that he will not accept the deposition.
Danforth, instantly: No, no, I accept no depositions.
From the evidence cited below, we can see that Parris suspects Betty's condition to be the result of something evil, something that he believes has "taken" his daughter away.
Parris, scrambling to his feet in a fury: Out of my sight! She is gone....
Yes, the dramatic irony of the situation allows us to understand that the girls reactions and symptoms are a direct result of fear. They are afraid of the reprisals if their pagan activities, lies, and manipulations are found out.