[1][2] She is the second most capped player for Sri Lanka after veteran Tharjini Sivalingam.

Gayani made her international debut in 2011 after emerging from youth level.

[3] Gayani was appointed as the captain of the team for a short tenure for the 2016 Asian Netball Championships where Sri Lanka emerged as runners-up to Malaysia.

[3] She was also one of the key members of the Sri Lankan contingent which emerged as champions at the 2018 Asian Netball Championships beating Singapore 69–50 in the final, which also marked Sri Lanka's first Asian Netball Championships triumph since 2009.

This biographical article related to Sri Lankan netball is a stub.