England have kept their hopes of drawing the women's Ashes Test series alive with a victory in the second Twenty20 of the multi-format tour.
The visitors won by 40 runs at the Manuka Oval in Canberra.
Brunt (32 not out) and Natalie Sciver (40) helped England post 152-6 from their 20 overs after they won the toss.
Jenny Gunn (4-13) and Brunt (2-10) then helped bowl the hosts out for 112.
The Aussies, who are already assured of retaining the trophy, now lead the points-based multi-format series 8-6.
England can level the series if they win the final T20 match, also at the Manuka Oval, on Tuesday, 21 November, with victory securing two points.