The 27-year-old sociology student at the prestigious Jamia Milia Islamia university was taking a nap, her husband, who didn't want to be named, told the BBC. The couple had married 19 months ago, and Ms Zargar had discovered just weeks earlier that she was pregnant. "She'd been suffering from nausea and was generally feeling lethargic," he said. The officers told them they were from the "special cell" - the anti-terror wing of the Delhi police - and asked her to go with them to their office in central Delhi. They said they wanted to ask her some questions about her involvement in protests against a controversial citizenship law that critics say is discriminatory towards Muslims. At the police station Ms Zargar was questioned for several hours, and at 22:30 she was arrested. That was on Friday 10 April. So for a month now, she's been lodged in Delhi's overcrowded Tihar jail - at a time when India is under a strict lockdown to fight the coronavirus pandemic and the government's own advisory says pregnant women are particularly vulnerable to infection. Ms Zargar has been charged under the Unlawful Activities Prevention Act (UAPA) - a draconian law that makes it nearly impossible for the accused to get bail. Since her arrest, she's been allowed to make two five-minute calls each to her husband and her lawyer. She has been denied both visits and letters on account of Covid-19 restrictions. Ms Zargar is among a number of Muslim students and activists who have been jailed since India's lockdown began on 25 March, leading to accusations that the government is using the pandemic to crack down on free speech and dissent. As a member of the Jamia Coordination Committee (JCC), a student group, she had been active in organising peaceful protests against the CAA in north-east Delhi. Her sister Sameeya describes her as "very gutsy, unapologetically honest and very opinionated". But police allege she was a "key conspirator" in riots that swept the area in February, in which 53 people, mostly Muslims, died.