that link shows as paywalled to me nova, but I found the article elsewhere and here are some interesting exerts from it, as I read it elsewhere
ON election night in 2013, Abbott’s staff, journalists and friends gathered at the Four Seasons Hotel overlooking Sydney Harbour. Credlin was hosting a victory party and the mood was triumphant. When Tony O’Leary, long-time media adviser to John Howard and a key figure in Abbott’s successful election campaign, arrived, he was met by security guards who questioned his right to enter. The guards disappeared inside to check whether he was welcome. Twenty minutes later O’Leary was escorted from the premises by security.
It was a public humiliation for the Howard loyalist in front of many of the journalists he had been dealing with for 15 years.
Credlin denies she blocked O’Leary that night. But to many in the Liberal Party, O’Leary had been “Credlined”, a verb now commonly used by Liberal staff members. Asked for a definition, one cabinet minister’s staff member ran his finger across his neck.

One minister told Inquirer Credlin’s power would not continue. The party would bring down Abbott if they had to, he said. Ominously for Abbott, the minister is someone who has publicly been defending him.
“They (Abbott and Credlin) have unnecessarily made enemies which means there’s no reservoir of goodwill when they need it,” he said.
“The partyroom just won’t accept the management style of that office to continue. If the management style continues this way Abbott will not take us to the next election, Malcolm Turnbull will.”
One Liberal powerbroker told Inquirer: “Abbott has two problems — Credlin’s control and Joe’s (Hockey) poor performance as Treasurer.
“He’s trapped; he doesn’t want to get rid of Credlin for loyalty reasons and he doesn’t want to get rid of Joe because he knows he would blow the place up because he doesn’t want to be the fall guy.”
Another influential Liberal says that Abbott will inevitably face another challenge unless he acts.
“We warned you ‘take Hockey out and take Credlin out’ and you have done neither,” he said. “We can’t let this lot do another budget.
In this new order, Credlin interrupts ministers in budget meetings; effectively runs the Expenditure Review Committee as Abbott sits silently; and manages the Cabinet Office as well as the PM’s office. While previous prime ministerial advisers have coveted anonymity, Credlin makes no secret of her opinion.
Last year, standing next to Abbott, she told a group of Australian journalists that Barack Obama was “the lamest of lame ducks”. Abbott said nothing.
On one occasion, Abbott made no complaint when Credlin put her hand in front of his face to stop him replying to a question from an editor.
Sometimes the chief of staff even finishes the Prime Minister’s sentences. Sometimes she answers for him even as they sit alongside each other. At a dinner in Canberra last year Abbott was fired up over the international profile he had gained by threatening to “shirt-front” Putin over flight MH17. One guest asked Abbott about national security, but it was Credlin who answered. Bob Hawke, Paul Keating and John Howard all had strong advisers but none of them would have cut across their boss in this manner.
Remarkably, Credlin was a key architect of the budget, sitting in on ERC meetings, sometimes interrupting ministers.
there is a lot more, and it's worth a read of the whole article and this is from team Tony's rupert Murdoch, Not sure if he's turned on abbott or is still trying to get rid of Peta Credlin