How many problems can a Nurse have?!?

There were several reasons why she was targeted. First, her relationship to a prominent citizen of the town of Topsfield, Francis Nurse, her husband. She was a member of the church in Salem Town and her husband was an outspoken leader of the anti-Parris committee. This was a committee who believed the reverend Parris was not hired properly and should be removed from the position of minister for the church of Salem Village. If they could bring down such a highly respected, deeply religious, pious pillar of the community, then surely they'd have absolute freedom over those they'd bring charges against in the future.
It should be noted that only the Judicial Branch of the Provincial Government can form a court as a part of governmental checks and balances. Clearly, Phipps was overstepping his own authority. Additionally, none of the magistrates of the Court of Oyer and Terminar had any legal training and relied heavily on their various religious backgrounds. Rebecca's two sisters were also accused for many of the same reasons. Several years earlier Rebecca's mother had been accused of witchcraft. She was, however, never tried. The trial itself was a sham and a virtual mockery of the judicial system. The complaint was signed by Edward and Jonathan Putnam. The charge was for afflicting Ann Putnam Jr. and Abigail Williams.