Kathleen McGrade was a contract specialist inside the State Department, but prosecutors say she didn’t live like one. Steering tens of millions of dollars in work to a company controlled by her husband, McGrade bought a yacht, penthouse condo and lots of jewelry, according to charges unsealed Thursday in U.S. District Court in Virginia. McGrade, 64, and her husband, Brian C. Collinsworth, 46, both of Fredericksburg, Va., face up to 20 years in prison on charges stemming from what authorities called a “secret scheme” by the couple to steer more than $60 million to a company they controlled. Authorities said…