The personal assistant for alleged S&M bondage fiend financier Howard Rubin — who prosecutors say had every aspect of her life paid for by her multimillionaire boss — had her parents secure her bail Wednesday in her federal sex-trafficking and tax fraud case.

Jennifer Powers, 45, pleaded not guilty Wednesday to charges she recruited and paid women to come to Rubin’s twisted “sex dungeon” in his Midtown penthouse apartment, and lied on her taxes about the $9 million Rubin shelled out to fund her and her husband’s lifestyle.

Powers, who was initially released on a personal recognizance bond after an appearance in federal court in Texas, had her bond set at $850,000 when she appeared before Brooklyn Federal Court Magistrate Judge Peggy Kuo.

Her father, Larry Mcguffin, who appeared in

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