PITTSBURGH — A woman used forged documents to pretend to be a lawyer for a decade and was in line to be named partner when her fraud was discovered late last year, according to charges filed by the state attorney general’s office. Kimberly Kitchen, 45, was charged late last week with forgery and unauthorized practice of law. State prosecutors contend Kitchen fooled BMZ Law by forging a law license, bar exam results, an e-mail showing she attended Duquesne University law school and a check for a state …