According to the Jewish Encyclopedia, Alexandra was instrumental in arranging the assassination of her brother-in-law, Antigonus, by convincing her husband that his brother was plotting against him [REF].
During the reign of Alexander, who (according to the historian Josephus) apparently married her shortly after his accession,[REF] Alexandra seemed to have wielded only slight political influence, as evidenced by the hostile attitude of the king to the Pharisees.