Nipun is the general secretary of the Dhaka District BNP, a member of the BNP executive committee, and the secretary of the Women and Children's Rights Forum. She is also the president of the South Keraniganj branch of BNP. On 18 March 2021, Nipun was arrested by
Dhaka Metropolitan Police from her residence in Rayerbazar, Dhaka, after an alleged telephone conversation between her and a BNP activist identified as Arman circulated online. Law enforcement authorities alleged that she had asked him to set fire to a bus following a shutdown called by
Hefazat-e-Islam Bangladesh. She was also shown arrested in another case filed with Jatrabari Police Station on charges including unlawful assembly, causing serious injury, and attempted murder. A High Court bench granted her bail on 16 June 2021, and she was released from the
Dhaka Central Jail two days later. On 28 October 2023, the residence of the former Chief Justice
Mohammad Muzammel Hossain was attacked and vandalism occurred in several areas surrounding a BNP rally in
Naya Paltan, Dhaka. In connection with the incident, seven cases were filed with Ramna Model Police Station and Paltan Model Police Station on charges including vandalism. Nipun named in the cases. She later obtained anticipatory bail from the High Court. After the bail period expired, she surrendered before the Dhaka Metropolitan Sessions Judge’s Court and applied for bail. Following a hearing, the court granted her bail in the seven cases on 24 March 2024. == Personal life ==