[12] In 2017, she was awarded the Yip Pin Xiu Scholarship to study accountancy at Singapore Management University.

[16] In 2013, Pereira became the first female Singaporean to run the 100 m in under 12 seconds when she clocked 11.89s at the 2013 World Youth Championships in Athletics in Donetsk, Ukraine.

On 3 March, she clocked 11.46s in the 100 m heats of the New Zealand Track and Field Championships to rewrite her national mark.

[34] On 31 March, she rewrote her 100 m national record after running 11.38s at the Australia Open; she lowered the mark to 11.37s when she won the final the next day.

[38] In the same month, she ran 11.34s and 11.26s in the heats and final respectively at the International Pentecost Sports Meeting in Rehlingen, rewriting her national mark twice in the same day and setting a Southeast Asian best.

[8] On 30 July, she claimed gold in the 200 m at the Mittsommernacht Athletics meet in Berlin with a time of 23.32s, beating Gina Lückenkemper, the reigning European 100 m and 4 x 100 m champion.

[41] On 5 August, Pereira clocked 23.38s to win the 200 m at the Folksam Grand Prix held in Malmö, Sweden; she narrowly missed out on the 100 m gold, finishing 2nd with a time of 11.50s.

[52] In the final, she clinched silver with a time of 11.27s, being edged out by China's Ge Manqi by 0.04s; this was the first Asian Games track and field medal for Singapore in 49 years.

[56] As part of preparations for her 2024 season and for the Paris Olympics, Pereira was entered for a 400 m race at the Florida Relays on 30 March.

Though she finished 5th, her 53.67-second effort eclipsed the 54.18sec mark set by Dipna Lim-Prasad that won her a silver medal at the 2017 SEA Games.

This meant that she would miss her debut in the Diamond League competition in Xiamen and Shanghai, as well as two major meets in Japan.

[57] On 6 July 2024, Pereira was unveiled as one of the flag bearers for the Paris 2024 Olympics, alongside Team Singapore sailor Ryan Lo.

With 6 slots up for grabs in the repechage, Pereira again placed last in Heat 1 with a timing of 23.45s, bowing out of the 2024 Paris Olympic games, finishing 31st out of 45 competitors.

[62] Pereira has been engaged to former national sprinter and 2x SEA Games bronze medalist, Tan Zong Yang, since 12 June 2024.