"The game was there for the taking and we scored the goals when we needed to."
Telfer scored her second penalty corner goal soon after the break before a brilliant solo effort from youngster Jaimee Whittaker secured the win late in the second half.
In other reserve A matches on Thursday night, Old Girls beat Whangarei Girls' High School 3-0 after the scores were level at halftime.
Springfield were able to get ahead of Parihaka 1-nil in a close match on Thursday while on Friday night, Kamo High School beat Mangapai 2-nil.
In the reserve men's grade on Thursday, Hora Hora beat Springfield 1-nil in a match where outstanding efforts from both teams' goalkeepers kept the score low.
Whangarei Boys' High School extended their winning streak to three by beating Maungakaramea 5-1 while Mangapai were beaten 6-4 by Bream Bay on Friday and Kamo High School drew a timely bye in their school holidays.