Brave Fremantle finally beaten in AFLW

North Melbourne have underlined Tasmania as an AFLW fortress by inflicting Fremantle's first defeat of the season at North Hobart Oval.

The Kangaroos (4-1) were never headed in the tight contest and won by 10 points, 3.8 (26) to 2.4 (16), with the result in the balance until the final minutes.

Travel-weary Fremantle (5-1) were brave without gun playmaker Kiara Bowers, who is serving a two-game suspension, but it was around the centre bounces and stoppages that the Roos excelled in her absence.

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Onballers Jasmine Garner, with 28 disposals, and Ash Riddell, 24, allowed the Kangaroos to extend their winning run at the club's second home to seven straight victories.

North Melbourne captain Emma Kearney said the Roos worked to fix their midfield and forward set-up after a loss to Adelaide, their only blemish this season.

"We love coming down here. It's a beautiful ground and they really look after it for us and it's nice to see so many people from Hobart come out and watch us," Kearney said.

The Roos dominated the second and third quarters, but left themselves exposed on the scoreboard with a run of eight straight behinds before defender Isabella Eddey pounced on an errant clearing kick to goal on the run.

Fremantle, playing their fourth game in 16 days before heading home to WA, mounted a spirited last quarter challenge, but the hosts found a crucial goal from Tahlia Randall with only three minutes left to provide the vital scoreboard buffer.

"Freo have been really awesome and we knew it was going to be a tough contest," said Kearney.

"They've had it tough over the last few weeks being in Melbourne, so it was a good fought-out game for us."

North Melbourne blew the chance