"[4] Originally an offstage vocal swing for the 2008 Melbourne production, Mathers was cast in Wicked straight out of drama school, and remained with the company as an ensemble member until the beginning of the Sydney season in 2009.

Suzie returned to the cast of Wicked for the first Australian tour performing in Brisbane, Adelaide & Perth, in the role of the Midwife, and was also the understudy for Glinda.

Suzie officially took over the role of lead Glinda from Lucy Durack in 2015,[7] performing in Singapore, South Korea, New Zealand and Manila to much critical acclaim.

[10] She has co-starred alongside various Australian theatre performers including Jemma Rix, Maggie Kirkpatrick, David Harris, Anne Wood and Gretel Scarlett as well as New Zealand actor Jay Laga'aia.

[12] Mathers made her West End debut reprising the role of Glinda this time in the London production of Wicked at the Apollo Victoria Theatre.

[14] Suzie's other appearances include An Afternoon with Stephen Sondheim[16] at Her Majesty's Theatre, Melbourne in 2012, both the 2011 and 2012 Rob Guest Endowment Concerts, headlining artist at the 2012 Apex Carols By Candlelight,[17] the 2009 Helpmann Awards, the role of Edith Faulkner in the 2007 New York Music Theatre Festival production of David King and Nick Enright's The Good Fight.