An NYPD lieutenant alleged in harrowing detail how the department’s hulking top cop preyed on her financial and emotional vulnerabilities to repeatedly sexually demean her in his Police Headquarters office, according to a new complaint. Lt. Quathisha Epps was facing foreclosure and desperate to keep her home the first time Chief of Department Jeffrey Maddrey asked for sex, she claimed in an exclusive interview. **SNIP** Maddrey strongly denies Epps’ claims. In one painful session, he bent her over a sofa in his 13th-floor office, she claimed to The Post, sobbing. “I kept asking him, ‘Can you please stop?’ Then I...