In the 15th General Election, Lim contested for the first-time and won the Tanjong parliamentary seat under the Pakatan Harapan ticket.[3]
She was then appointed to serve as the Deputy Minister of Education, along with Fadhlina Sidek as the Minister of Education, on 9 December 2022.[4] On 12 December 2023, she was moved and appointed to the post of Deputy Minister of Finance during a cabinet reshuffle.[5][6] She served on that role for two years until 16 December 2025, where in another cabinet reshuffle she was assigned to the post of Deputy Minister of Women, Family and Community Development, and Liew Chin Tong succeeded her as the new Deputy Minister of Finance.[7][8][9]
Controversy
On 27 March 2023, Deputy Speaker of the Dewan RakyatRamli Mohd Nor reprimanded Lim over the failure of not preparing an answer for the oral question-and-answer session.[10][11] Earlier, Ahmad Marzuk Shaary (PN-Pengkalan Chepa) had asked about the education ministry's plans to ensure students received nutritious meals in school. However, Lim told the Dewan Rakyat that she had not prepared an answer, and asked to submit a written reply. She said:
May I answer it through a written reply?
—Lim Hui Ying
An MP from Perikatan Nasional urged Lim to resign for failing to prepare an answer during the oral question-and-answer session in the Dewan Rakyat.[12] Meanwhile, MCA Youth secretary-general Daniel Wa Wai How said Lim's salary should be docked by RM10, citing past DAP calls for the same type of punishment against ministers.[13] Shortly after the incident, her special aide issued an apology, saying that the situation was “out of the ordinary”.[14]