[12][13][14] Between 2002 and 2007, Telfer made 39 senior appearances for Southern Sting in the National Bank Cup league.

[29][30] On 5 June 2016, during a Round 10 match against Mainland Tactix, Frew made her 100th ANZ Championship appearance.

[13][31][32][33][34] On 12 June 2017, Frew was one of six Steel players in a van when it was involved in a road traffic accident in Fendalton, Christchurch.

[4][35][36][37][38] Frew defied the medical experts and within 16 days, she had recovered to captain the 2017 Southern Steel to their first ANZ Premiership title, defeating Central Pulse 69–53 in the grand final.

[4][47][48][49][50] Frew captained the 2018 Southern Steel to their second ANZ Premiership title, defeating Central Pulse 54–53 in the grand final.

She subsequently confirmed her retirement by sharing her celebrations on Instagram, including a Kurt Baker–inspired picture, captioned "That's me.

Frew posed topless, with two strategically placed netballs, on the shoulders of Gina Crampton as she proudly lifted the ANZ Premiership trophy.

[8][57][58] In April 2022, Frew was included on a list of the 25 best players to feature in netball leagues in New Zealand since 1998.

[59][60] Telfer was a member of the New Zealand under-21 team that won the 2005 World Youth Netball Championships.

[61][62] On 2 November 2008, Telfer made her one and only senior appearance for New Zealand, playing the last quarter of a test against Australia.

[4][63][64][65][66][67] She was however a member of the New Zealand team that won the 2009 World Netball Series, playing in matches against Malawi, England and Samoa.