Previously, Al-Muslim was a business reporter at Newsday, covering retail and small businesses on Long Island, New York from June 2014 to November 2017. She also covered some publicly-traded companies, including organic food giant Hain Celestial, celebrity perfumes and fragrances seller Perfumania, fast food chain Nathan's Famous, kitchenware and tableware provider Lifetime Brands, and online florist and gifts company 1-800-Flowers.
From January 2011 to June 2014, Al-Muslim covered the Town of Hempstead, the largest township in the United States with more than 750,000 people, and composed of 22 villages and 37 hamlets.
Al-Muslim's investigative story with her colleague Will Van Sant was part of a Newsday series on police misconduct named a 2014 Pulitzer Prize finalist in the Public Service category. Her story involved a case of a 19-year-old who was beaten by Suffolk County police officers, went into a coma and later died from his injuries.
Al-Muslim is also a former editor of the Spanish-language community newspaper, El Correo de Queens, and a former reporter for its sister newspaper, The Queens Courier.
Al-Muslim is a December 2009 graduate of the City University of New York (CUNY) Graduate School of Journalism, where she studied journalism with a concentration in urban studies. Al-Muslim is also a graduate from Lehman College of the City University of New York, where she majored in multilingual journalism, and minored in Italian and Black Studies. She was on the Dean's List and graduated with summa cum laude honors in May 2008.