Ex-financier Howard Rubin’s personal assistant — who allegedly helped lure dozens of women for him to abuse inside a Manhattan “sex dungeon” — lived the high-life with her DJ husband thanks to her boss, who “funded virtually all aspects” of their existence, the feds said.

Jennifer Powers, a 45-year-old mother of three, was set to appear in Brooklyn federal court Wednesday morning for the first time since her indictment on charges she helped the famed former money manager run a sex-trafficking scheme for about a decade.

Powers — who began working for the Wall Street bigwig in 2011 — was hit with fresh allegations on the eve of her hearing that she failed to report the more than $9 million Rubin doled out to cover everything from her kids’ private school to her mortgage and credit card b

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