When Abigail is questioned by Reverend Hale, who does she blame,what proof does she offer? the question is in the first act of the story
Abigail blames the slave Tituba for the goings on in the woods. When Mrs. Putnam enters with Tituba, Abigail "instantly points" at her. She cries out, "She made me do it! She made Betty do it!..She makes me drink blood."
Though Tituba tries to defend herself, the quick-witted Abigail furthers her accusations: "She sends her spirit on me in church; she makes me laugh at prayer!...(To Hale) She comes to me while I sleep; she's always making me dream corruptions!"
As for proof, Abigial says that Tituba "makes me drink blood." Tituba confesses that this is true, but she does not "make" them and it is chicken blood, not baby's blood, as Mrs. Putnam fears. Abigail's other "proof" is, "Sometimes I wake and find myself standing in the open doorway and not a stitch on my body! I alays hear laughing in my sleep. I hear her singing her Barbados songs and tempting me with --."
Through a series of confusing questions, threats, and general intimidation, Tituaba breaks down. She tells Hale that the devil and she have spoken "four times" and that he wishes her "to kill you, Mr. Parris." In order cast the light of suspicion on someone else and save herself, Tituba accuses Goody Good. Mrs. Putnam is quick to believe this bit of "proof" because Goody Good had been the midwife to three of Mrs. Putnam's children who had died shortly after birth.
It is all enough "proof" for the court.