Why Did Abigail Admit That Tituba And Ruth Were Conjuring Spirits?

Why Did Abigail Admit That Tituba And Ruth Were Conjuring Spirits? Why does Abigail “admit” that Tituba and Ruth were conjuring spirits? She admits that Tituba and Ruth were conjuring spirits only to save Betty from being accused of witchcraft. Abigail treats the other girls badly, but treats her uncle good and with respect. Why