She made it all up — and now she’s under arrest. The Muslim college student who claimed she was harassed on the subway by three men who shouted “Donald Trump,” called her a terrorist and tried to rip her hijab off her head has admitted to detectives that she concocted the entire story, the Daily News has learned. Yasmin Seweid, 18, has been charged with filing a false report, a police source said. Seweid had numerous opportunities to admit the incident never happened but again and again stood by her story, the source said.