In Act II of "The Crucible", when Abigail is alone with Proctor, what claim does she make?

Abigail tells Proctor that Betty wasn't bewitched, or a witch herself, but that she had "only gone silly somehow".  She said "we were dancin' in the woods last night, and my uncle leaped in on us.  She took fright, is all."  This is significant news, considering later when she is in danger of getting in trouble, she contradicts this claim by "confessing" to trafficking with the devil, and then naming women in the town as witches.

Later, John tells his wife what Abby had said, but leaves out the little detail that he and Abby were alone when this information was shared.  Elizabeth wants John to tell the courts, thinking that this will stop the madness, because it proves that the girls were not bewitched.  Unfortunately, it doesn't work.