Chasing a challenging target of 161, the Caribbean side’s run chase never got off the ground and they hobbled to 74 for nine off their allotted 20 overs.
The defeat left them 2-0 down in the series and extended their poor record on the road.
Sent in, Australia Women were propelled by a series of cameo innings from their top three. Opener Elyse Villani top-scored with 50 off 34 balls, Jess Jonassen hammered 47 from 39 deliveries, while captain Meg Lanning struck 45 from 26 balls.
The right-handed Villani struck eight fours in an attractive innings, adding 93 from 68 balls for the first wicket with left-hander Jonassen, whose knock was decorated by one four and three sixes.
Both fell within the space of 13 balls with 12 runs, removed by leg-spinner Shaquana Quintyne, but the innings was kept on course by a 42-run stand off 25 balls between Lanning and Jess Cameron (11).
Quintyne was the best bowler with two for 32 from her four overs.
In reply, prolific opener Stafanie Taylor top-scored with 19 and was one of only three players in double figures as the batting collapsed.
They slumped to five for two in the second over with Hayley Matthews (2) and mainstay Deandra Dottin both back in the pavilion. They slipped further to 19 for two in the sixth over before Taylor and Shemaine Campbelle (15) staged the biggest stand of the innings in a 20-run partnership.
Once Taylor was stumped, giving leg-spinner Kristen Beams the first of her three wickets, the Windies Women’s innings slid into turmoil and never recovered.
Fast bowler Ellyse Perry (2-10) and left-arm spinner Jonassen (2-12) picked up two wickets apiece.
E Villani c & b Quintyne 50
J Jonassen c Selman b Quintyne 47
*M Lanning not out 45
J Cameron b Dottin11
E Perry run out 4
Extras (w3) 3
TOTAL (4 wkts, 20 overs) 160
Did not bat: A Blackwell, +A Healy, E Osborne, S Coyte, R Farrell, K Beams.
Fall of wickets: 1-93, 2-105, 3-147, 4-160.
Bowling: Selman 3-0-25-0 (w2), Daley 3-0-20-0, Quintyne 4-0-32-2, Connell 3-0-26-0 (w1), Mohammed 4-0-29-0, Matthews 1-0-14-0, Dottin 2-0-14-1
WEST INDIES WOMEN
S Taylor st Healy b Beams 19
H Matthews c & b Jonassen 2
D Dottin c Jonassen b Perry 1
B Cooper c wkp Healy b Beams 5
S Campbelle st Healy b Beams 15
*+M Aguilleira c Healy b Jonassen 4
S Daley c Cameron b Perry 14
S Quintyne run out 0
A Mohammed run out 3
S Connell not out 6
S Selman not out 4
Extras (lb1) 1
TOTAL (9 wkts, 20 overs) 74
Fall of wickets: 1-4, 2-5, 3-19, 4-39, 5-46, 6-50, 7-57, 8-62, 9-64.
Bowling: Farrell 3-0-11-0, Jonassen 4-0-12-2, Perry 3-0-10-2, Beams 4-0-16-3, Osborne 4-0-14-0, Coyte 2-0-10-0.
Result: Australia Women won by 86 runs.
Series: Australia Women lead four-match series 2-0.
Toss: West Indies Women.
Umpires: G Davidson, T Wilds.
TAYLOR… top-scored with 19 and was one of only three Windies players in double figures