How has the charges against Martha Corey changed since act II?

In Act II of "The Crucible," Martha Corey is accused of witchcraft primarily because she owns a pig that is not thriving, leading to suspicions from her neighbors. By the time of Act III, the charges against her have escalated, reflecting the growing hysteria in Salem. She is now implicated in the broader witchcraft accusations, highlighting how paranoia has intensified and how personal grievances can lead to serious consequences. Her case illustrates the tragic consequences of the witch trials on innocent individuals.